Hi, I'm testing some code that uses Content-Type: multipart/x-mixed-replace;boundary=$separator to push updates from the server to the browser. The script shows two pages in succession; one that says 'processing' in the middle of the screen, and a second one that renders the page I actually want to see. I've put a 10 second sleep between the pages in the script. On my 'toy' server, I see the first page, wait 10 seconds and then get the second page. On my dev server however, I see an empty page for 10 seconds and then the second page is rendered. So I never see the 'Processing' message page. My 'toy' server is Wamp 2.2 running locally on the windows machine I'm using to edit the script. My dev server is based on U14.04 and runs in a VM on another LAN connected PC. The dev server is configured as per my sig. I have a very strong suspision that my problem is related to caching and/or buffering on the dev server because all the output (first and second page) is eventually received in my browser, but in a single chunk. Using FireFox's Inspector I can see that nothing is in the browser until the 10 second delay expires and then I get the whole lot. I have tried sending a bunch of whitespaces (approx 5000) after the first page so as to overflow the buffer. I have tried using the Cache-Control: no-cache header, and I have also tried flushing the buffer between pages. But nothing at a scripting level seems to make it work. Has anyone done this before? Anyone have any ideas on what's going wrong? Cheers, Nap ------------------- I can supply the script ('HV_HttpMultipart') if necessary, I retrieved it from phpClasses.com. I have turned off output_buffering and zlib compression in my php.ini file, but can supply more information about my php.ini and httpd.conf and other apache2 settings if asked. As I think it's just a matter of disabling a certain apache mod, here are the Apache modules that I have enabled. The first part of the list shows mods that are used in both my WAMP server and U14.04. Then second part is U14.04 only, and the third is WAMP only. Code: Addons used in both WAMP and U14.04 =============================================================== actions.conf -> ../mods-available/actions.conf actions.load -> ../mods-available/actions.load alias.conf -> ../mods-available/alias.conf alias.load -> ../mods-available/alias.load auth_basic.load -> ../mods-available/auth_basic.load auth_digest.load -> ../mods-available/auth_digest.load authn_file.load -> ../mods-available/authn_file.load authz_host.load -> ../mods-available/authz_host.load authz_user.load -> ../mods-available/authz_user.load autoindex.conf -> ../mods-available/autoindex.conf autoindex.load -> ../mods-available/autoindex.load cgi.load -> ../mods-available/cgi.load deflate.conf -> ../mods-available/deflate.conf deflate.load -> ../mods-available/deflate.load dir.conf -> ../mods-available/dir.conf dir.load -> ../mods-available/dir.load env.load -> ../mods-available/env.load include.load -> ../mods-available/include.load mime.conf -> ../mods-available/mime.conf mime.load -> ../mods-available/mime.load negotiation.conf -> ../mods-available/negotiation.conf negotiation.load -> ../mods-available/negotiation.load rewrite.load -> ../mods-available/rewrite.load setenvif.conf -> ../mods-available/setenvif.conf setenvif.load -> ../mods-available/setenvif.load Addons used only in U14.04 =============================================================== access_compat.load -> ../mods-available/access_compat.load authn_core.load -> ../mods-available/authn_core.load authz_core.load -> ../mods-available/authz_core.load dav_fs.conf -> ../mods-available/dav_fs.conf dav_fs.load -> ../mods-available/dav_fs.load dav.load -> ../mods-available/dav.load fastcgi.conf -> ../mods-available/fastcgi.conf fastcgi.load -> ../mods-available/fastcgi.load fcgid.conf -> ../mods-available/fcgid.conf fcgid.load -> ../mods-available/fcgid.load filter.load -> ../mods-available/filter.load (deflate needs this) headers.load -> ../mods-available/headers.load (needed by security.conf) mpm_prefork.conf -> ../mods-available/mpm_prefork.conf mpm_prefork.load -> ../mods-available/mpm_prefork.load php5.conf -> ../mods-available/php5.conf php5.load -> ../mods-available/php5.load python.load -> ../mods-available/python.load socache_shmcb.load -> ../mods-available/socache_shmcb.load (ssl needs this) ssl.conf -> ../mods-available/ssl.conf ssl.load -> ../mods-available/ssl.load status.conf -> ../mods-available/status.conf status.load -> ../mods-available/status.load suexec.load -> ../mods-available/suexec.load suphp.conf -> ../mods-available/suphp.conf suphp.load -> ../mods-available/suphp.load unique_id.load -> ../mods-available/unique_id.load WAMP Only: LoadModule asis_module modules/mod_asis.so LoadModule authn_default_module modules/mod_authn_default.so LoadModule authz_default_module modules/mod_authz_default.so LoadModule authz_groupfile_module modules/mod_authz_groupfile.so LoadModule isapi_module modules/mod_isapi.so LoadModule log_config_module modules/mod_log_config.so LoadModule php5_module "c:/wamp/bin/php/php5.3.13/php5apache2_2.dll"