Windows close on desktop when a new one opens
HI, Just got a new iMAC. This morning, all of a sudden, I have trouble keeping more than one window open on the desktop at the same time. For example, I may have the iTunes window on the desktop, but when I click the dock to open Safari the iTunes window suddenly dissapears. Seems like I can only have one window on the desktop. Sometimes the finder window stays when I open an app, sometimes not. It's driving me crazy. I've restarted the Mac several times with no change. Any ideas would be welcome...
iMac, Mac OS X (10.0.x)