Aim with sights, BAM! UBER BRIGHT!

Only on CoD4.
This is just many of the random things that happens in CoD4. Usually everything is alright, but sometimes, itll freeze a second, then suddenly really odd graphical errors will appear. My FPS is fine (like said and shown in the screenshot) but decals, textures, and lighting in some places are flashing some neon color (blue buckets, black floors and ceilings, red guns, yellow grass... varies by map). The occurrence in my screenshot happened only today. Just really odd lighting/decal errors, while keeping steady FPS.

I was told it was a driver error, but I'd like more input. What do you guys think? My drivers are up-to-date and even after a driver update this will happen.
System Specs:

AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ (2 CPUs), ~2.0GHz

2558MB RAM

Hard Drive:
224 GB

Video Card:
NVIDIA GeForce 8600 GTS

Dell E772 (CRT Monitor at 1024x768)

Sound Card:
Realtek High Definition Audio

Operating System:
Windows Vista™ Home Premium (6.0, Build 6001) Service Pack 1

If it helps, I ran some video card softwares and it told me I run around 60-65 C idle and 81 C ingame. I've got the stock fan and haven't overclocked.
Last edited by RPGoof at Jul 19, 2008,