Fedora4 + Plesk9.3 I have on my server, and I can not upgrade PHP because I can not find repositories for fedora4, only atomic repositories, but for CentOS 5 ...
Any chance of finding support, or failing that, any chance of returning to plesk 8?
Fedora 4 support in atomic was dropped a few years ago. The oldest still supported "by luck" is fedora 6, that means that if they build they'll go up, otherwise they get skipped.