I am facing Grey Screen of Death issue with the XFX HD 5850, there is no fixed pattern to it and it happens anytime i play a game. I have also encountered some ghosting on my desktop and once when i encountered GSOD upon reboot I got the error " Hyper Transport sync flood error occurred on last boot." I also have a spare Saphhire HD 5670 and there are no such issues with the card. Is there some hardware issue with my 5850 or is it something else. Please advise.