I have been experiencing BSODs or vertical gray line freezes while playing the new WoW Cataclysm. I am able to play 2-20 minutes at a time and then I get those crashes. I have an ATI Mobility Radeon HD 4200 series graphics card and I am running Windows 7 (64 bit). I am up to date on my graphics card (10.12 driver released 11/25/10). I have tried many of the solutions on the WoW technical forms and have had no success. I can provide a DXDIAG or MSINFO30 if needed.