Note sure where to post this as I do not know if it is a video, mouse or software issue: I am running FSX on a desktop Vista 64 machine with Nvida GTX 285 video card, Asus PT6 motherboard with builtin sound card and generic USB mouse and dual Acer LED monitors. Problem is very annoying. While flying if I haven't touch the mouse for a little while when I do move the mouse from anywhere on the screen, both monitors go blank for about 5 seconds and then return to normal. The sounds conitue and the plane keeps flying during the blank screens. I have updated to the latest video driver, no help. Happens with the stock planes and addon planes. Running FSX with SP2. Any ideas where to look next? JC

Vista is perhaps de-powering the mouse due to inactivity. Check your power management config in Control Panel. Cheers, - jahman.