Strange, I just applied the security update from 11/5 and login doesn't work for all my users.
Ok solved it, control panel runs ssl @ 8080 and...
I just found following bug id:
Same issue here.
client denied by server configuration: /usr/share/phpmyadmin/
It seems to be related to my .4 -> .6 upgrade.
Also a good source of backported deb's (for php / mysql meanly) http://www.dotdeb.org/
My remark was mostly concerning the issue with the wrong subnetmask.
dns whois -> .eu isn't in the list
after installation on a system with a non standard netmask it is wrong in ispconfig panel....
Separate names with a comma.