Is there any timeline for support on RHEL and Centos 5.3 please? Many package versions that plesk requires are older than the release versions and forcing a downgrade is not ideal.
With all the bugs in Plesk 9.0.1 and release 9.0 was promised to have Fedora 9 support don't hold your breath. I think they are way too worried about trying to fix goodness knows how many tickets let alone attempt any new OS updates.