Bad video card?

[Tim Wunder]

Over the past day or so, I've been experiencing lock-ups on my main PC. They 
appear to be video card related. My system hardware has been unchanged for 
nearly 2 years and I'm on FC6 (yes, that's a 6).
The video card is Biostar 7300GT, PCI-E card with DVI and VGA connectors on 
it.

I could get the lockup pretty consistently by simply running glxgears. The 
lockups would be anything from just X freezing to the entire system freezing 
(unable to ssh to the box).

This morning I replaced the nvidia driver with the nv driver and so far the 
system is fine (about an hour).

I'm inclined to think the video card is toast, but was wondering what other 
tests I could do to verify that.

Thoughts?

Thanks, 
Tim

P.S. Sorry for the computer-related noise with this question ;)
-- 
Fedora Core release 6 (Zod), Linux 2.6.22.14-72.fc6
KDE: 3.5.8-1 Fedora
 09:15:01 up 46 min,  3 users,  load average: 0.89, 0.69, 0.47
"It's what you learn after you know it all that counts" John Wooden
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