Strange resolution when coming out of standby

This issue started happening after I re-imaged my computer. I currently have an Asus 9600GT PCI Express card hooked up to a Samsung Syncmaster 933BW 19" LCD monitor. What happens is the display size becomes larger than the size of the monitor so you can scroll up and down on the desktop. When I go into the resolution it is as usual with 1440x900 yet the desktop is larger than that. The only way to get it back is to drop the resolution down one level, apply that and then move it back up. This only happens when I am moving from one of my computers to this one that has the problem via my KVM switch. I've had the same monitor for about 9 months now and until about a month ago when I re-imaged this machine is when this started happening. Has anyone had a similar issue and if so how was it resolved?


Thanks,
Nick