I recently bought the new Gigabyte 5870 Radeon (the one with the dual fans). On day one it crashed in games, but I upgraded the bios to FN6, however now randomly in game, or just watching a movie, the screen does this split second grey line or flash, is this bad? It doesn't crash but it's pretty annoying and for a 400$ card I shouldn't be getting these problems. Also, my 5870 whines a lot...I've heard it's the "coils" and that you can put nail polish on them and it quiets them down? Any truth to this? Thanks!