I posted on ATI's site but didnt receive any responses....anyone here seen this?Hello -I am using a 3 monitor set up. Up until this week, I was using an HD4800 series that came with my Dell XPS 730 as the main video card (center monitor) and a much older Radeon card (cant even remember what it was) to run the left and right monitors.This worked very well all the time. I used the left monitor for FSX 2D panels and the right monitor for charts and stuff.I just bought the HD4850 and now use that as my main card. I then use the older 4800 series card for the other two monitors.Here's the problem:Whenever I start FSX, and the main screen pops up (the one where you select the airplane, airport, weather etc) I get a graphics corruption after about 15-30 seconds and it crashes my whole system. However, if I drag the FSX screen to one of the other two monitors before this happens, it works fine.FSX itself works flawlessly as long as I can get past the main screen.I am using Vista64 SP2Intel i7 2.93 ghz5gb ramI am using the latest catalys driver

Shouldn't one of the monitors act as a primary? Maybe FSX is trying to access a specific monitor.

Yes the 4850 is selected as the primary monitor in both windows and fsx. I should mention that I obviously run fsx windowed