I get random pauses but that's because I see a nice FAT fastball or inside slider coming and I get a little power flux in my thumb which slips and hits the pause buttion!! :)
Ever since I disabled VSYNC I have not had any BSOD's or any other graphics issues. Phenom II X6 1055T @ 3.5Ghz, 8Gb DDR3-1333, 5870, WD 1TB, Win 7 Ult