Hi, seth vidal wrote: > and how does the work for removals? > should yum remove foo only remove foo.x86_64? Yes, if x86_64 is the preferred architecture. > or should it match foo.i386, too? With x86_64 as preferred architecture, no. > yes it sorts these out. That's nice. > it has that option - just specify the arch you want. That's what I did but it's only a command line option. > download the boost rpms that caused this problem and run: > rpm -Uvh that.rpm > > and see if it doesn't remove the boost.x86_64, too. I can't, I installed today Suse on that particular system and there I don't use yum but I'm quite sure that it works now :). Regards, J?rgen PS.: I read your Blog and your thoughts about the future of FC4 and hope that a few of this thoughts make it into FC4/5 :).