Somehow my CentOS was upgrade to 4.4, may be through yum update. Now I am about to install ISPConfig and always fail with message "...Your operating system is not supported! ". Is there anyway to make the my Centos 4.4 works with ISPConfig 2.2.6? Thank you pkardono
Change the version number in the redhat relaese file to 4.3, install ISPConfig and then change the version number back. So ISPConfig detects your server as centos 4.3.