I am having an issue where every 5 - 15 mins of game play the screen will go black. The hud still displays and reacts, and based on the sounds everything else seams to be normal (can walk around, shoot, etc...) Occasionally it will start "flashing". I will see bits and pieces of the world, but it eventually goes black again.
A save and restart will fix this. (for the next 5 - 15 mins at least) I did have this happen exactly once in Fallout 3, (Roosevelt academy) but never occurred again once I left. NV its happening consistently. (When I run at 1080i and 720p this glitch occurs, but at 480 it does not! I've been playing at 480, but I want my HD)