Hi Daniel,
i need version 5.x - there are several files - one ending with i586 and one with i386 and one with ppc and one with src... which one should i choose ? :)
Good question. I can only guess at the correct answer, since 4.3.9 works good enough for me. ;-)
I would first try the i386 rpm (rpm -Uvh [whatever].i386.rpm --test) - unless you have a RaQ1/2 - and if that fails, I'd try the src.rpm (rpm --rebuild [whatever].src.rpm).
The source rpm will try to configure and make on your system, so this might put some load on your server. You might want to do that in your "service frame." This decision is of course entirely up to you.
BTW - ppc is for macintosh, don't touch it. Good luck... Nico