[CentOS] Centos 5.8: starting firefox-16.0.1 kills X

fred smith wrote:
> in another posting in this thread, Tru Hyunh asked about the general
> X setup. Vanilla Centos 5.8 except it's using a recent Nvidia driver
> to run a GeForce 9800GT card. (NVIDIA-Linux-x86-290.10).

first thing i'ld do is update the nvidia driver, and I recommend 
switching to the elrepo packages for that.
Is your centos 5 up-to-date?