Recently my mid-2009 vMB has had two occurrences of what seems to be a display driver issue. The screen freezes for a minute and gets a white tint, almost like a film, and when it unfreezes the screen flickers. After each occurrence I have turned off my computer, and when I turn it back on again, it doesn't happen again. It seems to happen at random times, and when running a fullscreen application. (BF3.exe and DOSBox were the culprits) Should I try to update my display drivers, or do something else? Thanks in advance.