Not sure exactly when it started, but I've noticed a very slight increase lately in the frequency of this event... I'm referring to the tendency of my GeForce 5700LE to start producing huge swaths of green while running FS9. Usually it's the whole sky; sometimes more areas are affected. There doesn't seem to be much rhyme or reason to it: lower settings don't necessarily help, and the temps are normal as far as I can tell. Sometimes it happens after hours of flying, sometimes when I first start out. Hitting the "Alt" key twice clears it up, and I rarely see it twice in one session.
I also noticed when I recently fired up CFS3 for the first time in months that at screenshot-quality settings, there were little green cubes scattered all over the mission target areas. Weird.
Now before anyone gets too concerned, bear in mind that I'll soon be building a new rig almost exclusively for flight-simming, so I'm not too worried... I'm just curious.
Is the card on its last legs? Opinions?