That convincing enough for you?
I get these during some games. Model stretching, texture corruption, polka dots appearing on structures, completely random crashes of my graphics card drivers. I tried the drivers I had installed with, the ones on my CD, and then the latest from ATI - no go. No matter the drivers, I still get the problem.
I've posted a thread already at Sapphire Community: http://forums.sapphiretech.com/showthread.php?t=19986 You don't need to register to view it. Basically, it'll tell you some more about my problem and let you know of what I've already done and checked to try to remedy it.