Half-Life 2 Engine Glitch

[Gimion]

Okay, Here's the deal. When I am looking at models from certain angles, I get these strange stripes. As far as I know, these are not artifacts. I think they must be some kind of graphical glitch or whatever but I have no idea how to fix it.
I don't think they are artifacts or that they're because of a crappy videocard since mine is a Radeon 9600 XT and my computer SHOULD be working just fine since I bought it last February, Plus other new games (Doom 3?) work just fine.
I don't think it's the anti-aliasing problem since I turned that off in the options screen and it doesn't look like the problem other people have.
Here are 2 screens.

And another one..

Please help! Thanks alot!

Gimion.

P.S. : I know the pictures are from Vampire : The Masquerade bloodlines but it's exactly the same problem as in Half-Life 2 and Counter-strike : Source.

 

[The Dark Elf]

This kind of error happens a few times, its got a name


Unfortunately I don't remember more than that. I did get it a couple of times but that was with a Geforce4MX. Update your drivers though, might help.. Or downgrade them.

 

[Dreglor]

that only happens to me when i try to overclock my video card (ati)
may be the drivers that nivida is giving out is pushing the limits of the core and memory speeds

 

[Bakurei]

Well the gaqme is extremely buggy (but damn good!). I get those errors too, but not so often. I have a 9800pro, and i haven't overclocked it a bit. Just wait for a patch.

 

[Ebenol]

Yeah, those are artifacts that show up when I overclock way too far. I don't get them anywhere else though. Might want to try screwing around with drivers, maybe the Omega drivers work better?