I just purchased a KDS 190is 19" monitor a month ago, and it has a problem going in to full screen mode at times. When I run Ghost Recon (and Counterstrike, Quake, VMWare, etc.) my monitor attempts to go full screen, clicks (resolution change noise) a few times, then reverts to the small box in the corner. Sometimes it gives me a 'failed to switch to full-screen VGA mode' error message. A reboot usually fixes it for a few minutes, then it goes right back to it's original problem. This is starting to become annoying - help!
Oh, and I have a Radeon 9000 Pro and XP if that helps.