Just bought this GPU over the weekend (PNY GTX 580 OC) and I am having issues with it locking up while gaming. Getting this green checkered board look all over the screen and I have to hard reboot to get back into windows. So far only having this issue with Crysis 2 with DX 11 patch and Just Cause 2. I once had this issue with a 6800gt and I had to replace it as it died a few days later after this came up. Hoping its not the same issue. Should I just take it back and get it replaced? Temps are fine, 40C idle and ~73C while playing Crysis 2 before lockup. Upgraded from a GTX 295, did uninstall drivers before installing the 580.