after a virgin rh6 install to Dell 410 server (Pentium II/450, S3 768 2Mb video RAM 1024 x 768), I am able to use gnome as lanched from the login gdm screen. the problem: about half the time, when i choose "logout" from the menu bar the machine freezes. not just X11, the entire machine. it won't even respond to ping. the only recourse is pushing the reset button. this same exact computer runs kde without problems and for the last 6 months has been running rh5.2 and fvwm2, so i suspect that the problem is not the hardware. a kernel upgrade to linux-2.2.10 didn't help. both the uniprocessor and the multiprocessor kernels exhibit the same behaviour.
Does the problem continue with the lastest XFree packages available from ftp://updates.redhat.com?
I have RH6.0 running on a Celeron 400 system. I installed all update rpms including XFree86 but not kernel updates, I downloaded 2.2.10 source which I compiled and installed. A user rebooted the computer, I asked why and he said that when he logged out of Gnome everything froze up on him. This has only happened once so far.
This sounds like a kernel or XFree86 problem - there is no way unprivileged GNOME programs could do something like this.