To Jeff7, if you look closely at the pictures, you'll notice a difference in the capacitors. Now, I'm definitely not very educated in chip design, but the one thing I noticed was that the capacitors on the good card had green letters and the capacitors on the bad card had black lettering (like mine). Maybe I'm oversimplifying, but that's what I noticed. And yes, this is a GeForce4 Ti4200 problem. I haven't heard of problems with any of their other cards (as far as I know, but I could be wrong).
To Celstar, it's possible that you lucked out and got a good card (they do exist, although from the looks of it, not many). I hope you did. I don't know what your system specs are, but if you're running on a P4 board, I'm pretty sure these cards are more stable on P4 boards (judging by what was said in the thread from the link above). It may also be more stable because you have a higher case temp. It's strange, but it seems that the problem with these cards gets worse with cooler case temps., and that was definitely the case with my card as well.
What bothers me is not that they had a bad product, because that may happen every once in a while. But after reading about people having to RMA their cards multiple times and after all of these complaints Gainward has not made any sort of public statement (to my knowledge), that bothers me. I'm going back to college soon and I NEED my video card to work properly. I'm going to go crazy if they send me back another card with the same damn problem.