RHEL is pretty slow with some things. I have used 3,4, and now 5 at work, and had issues with them all, usb storage and printing conflicts with 4-5, and that's with an intel P4 mobo. I run FC12 on my home work station with way less issues and it's on an pretty recent asus server mobo with a xeon 3430 cpu.
RHEL is just so slow to update things, flash player, office 2007 compatability, mplayer, I would never run it as my preferred distro. I always hope the next distro will be better and so far have been disappointed. Only lately has RHEL5 been catching up with useful updates. It's been like that since 2007. Maybe RHEL6 will surprise me. That looks to be at least a year away as they are still many running RHEL4 here.
RHEL is just so slow to update things, flash player, office 2007 compatability, mplayer, I would never run it as my preferred distro. I always hope the next distro will be better and so far have been disappointed. Only lately has RHEL5 been catching up with useful updates. It's been like that since 2007. Maybe RHEL6 will surprise me. That looks to be at least a year away as they are still many running RHEL4 here.