ISPCONFIG really works well - imo the best open source panel - but after 4 months of regular use I have a first problem: On Debian Squeeze / ISPCONFIG 18.104.22.168 I wanted to do an upgrade from joomla-3.0.3-5 to 3.1.1-5. Uninstalled joomla 3.0.3-5 using the APS installer. Now when I try to click on joomla 3.1.1-5 I get: Error Invalid ID This happens for whatever site I try to install joomla on, so I think the problem lies in the ISPCONFIG application database. However I am unsure where that is. I have seen a similar problem here on ubuntu: http://www.howtoforge.com/forums/showthread.php?t=62355 on the forum, but no solution. Any help appreciated.