issues in /var/log/apache2/error.log

Hello, I am seeing this output in my error log -

any ideas?

Code:

[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 557, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: domain in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 615, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: domain in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 634, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: sites:on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:19:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: sites:web_domain:on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:20:02 2011] [notice] caught SIGTERM, shutting down
[Mon Nov 21 22:20:03 2011] [notice] suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Mon Nov 21 22:20:03 2011] [notice] Digest: generating secret for digest authentication ...
[Mon Nov 21 22:20:03 2011] [notice] Digest: done
[Mon Nov 21 22:20:03 2011] [notice] Apache/2.2.20 (Ubuntu) DAV/2 mod_fcgid/2.3.6 PHP/5.3.6-13ubuntu3.2 with Suhosin-Patch mod_ruby/1.2.6 Ruby/1.8.7(2011-06-30) mod_ssl/2.2.20 OpenSSL/1.0.0e configured -- resuming normal operations
[Mon Nov 21 22:21:09 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: html_server in /usr/local/ispconfig/interface/web/monitor/show_sys_state.php on line 237, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:09 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: unknown in /usr/local/ispconfig/interface/web/monitor/show_sys_state.php on line 255, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:09 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: info in /usr/local/ispconfig/interface/web/monitor/show_sys_state.php on line 256, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:09 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: warning in /usr/local/ispconfig/interface/web/monitor/show_sys_state.php on line 257, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:09 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: critical in /usr/local/ispconfig/interface/web/monitor/show_sys_state.php on line 258, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:09 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: error in /usr/local/ispconfig/interface/web/monitor/show_sys_state.php on line 259, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:09 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: description in /usr/local/ispconfig/interface/web/monitor/show_sys_state.php on line 72, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:12 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: web_id in /usr/local/ispconfig/interface/web/sites/ajax_get_json.php on line 38, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 557, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 557, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: sites:on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: sites:web_domain:on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:13 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: global in /usr/local/ispconfig/interface/lib/classes/getconf.inc.php on line 50, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: server_id in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 424, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined offset: 1 in /usr/local/ispconfig/interface/lib/classes/getconf.inc.php on line 38, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 557, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 557, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: domain in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 615, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: domain in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 634, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: sites:on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: sites:web_domain:on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:15 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: global in /usr/local/ispconfig/interface/lib/classes/getconf.inc.php on line 50, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: server_id in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 424, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined offset: 1 in /usr/local/ispconfig/interface/lib/classes/getconf.inc.php on line 38, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 557, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 557, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: domain in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 615, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: domain in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 634, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: sites:on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: sites:web_domain:on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: global in /usr/local/ispconfig/interface/lib/classes/getconf.inc.php on line 50, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: server_id in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 424, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined offset: 1 in /usr/local/ispconfig/interface/lib/classes/getconf.inc.php on line 38, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 557, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 557, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 558, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 559, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined variable: page_form in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Trying to get property of non-object in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 560, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: domain in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 615, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: domain in /usr/local/ispconfig/interface/web/sites/web_domain_edit.php on line 634, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php
[Mon Nov 21 22:21:16 2011] [error] [client 9.9.9.9] PHP Notice:  Undefined index: sites:on_after_update in /usr/local/ispconfig/interface/lib/classes/plugin.inc.php on line 139, referer: http://mydomain.com:8080/index.php