I purchased a Forsa GeForce 7900GTX ~1 month ago. Shortly after installing the card and firing up Sauerbraten or Tremulous I noticed that the polygons/triangles would start flashing on screen redraws, also random coloured spots would appear.
I have some screenies at http://users.tpg.com.au/adsl55l9/nv
nvidia-settings shows the card can sometimes get up around 60C and the hot season has just arrived. I've tried playing said game with different AA settings as well as changing the screen resolution but if at best that only delays the coloured spots a short time.
I've also noticed that sometime the KDE background gets all screwed up.
Restarting X or the system doesn't help. In most cases when I restart X the whole system will reboot :-(
I'm using nvidia-8774 and was also using the release before that which also showed the same problems.
uname -a: FreeBSD madcat 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #1: Sat Sep 16 19:18:31 UTC 2006 agh@madcat:/usr/obj/usr/src/sys/MADCAT i386
dmesg | grep nvidia: nvidia0: <GeForce 7900 GTX> port 0xec00-0xec7f mem 0xdf000000-0xdfffffff,0xc0000000-0xcfffffff,0xde000000-0xdeffffff irq 16 at device 0.0 on pci8
Xorg conf: http://users.tpg.com.au/adsl55l9/nv/xorg.conf
Full dmesg: http://users.tpg.com.au/adsl55l9/nv/dmesg