Originally Posted by till
Have you been able to fix the issue with phpmyadmin? Have you tried a different browser? It might be that the login fails when the browser ahs some ad or scriptblock extensions installed or it does not accept the session cookies from phpmyadmin and ispconfig.
No it seems like the same issue with both ispconfig and phpmyadmin though...
Switching browsers does not fix the issue and logging onto an ispconfig installation on a different server works fine.