disappearing windows

John Melby

I've been using OS X for a year now, and everything has been working as it should. However, within the past few days, a very annoying problem has cropped up, and I'd like to know if anyone else has had a similar experience and has figured out how to correct it.

The problem is that if I have a window open and I try to open another window (for example, if a Mail window is open and I try to open a Terminal window, or any other kind of window, for that matter), the previous window disappears when the new window opens. If I close the new window, then the old window reappears.

If I create a new user, this problem goes away as long as the new user is running--so I figured that it must be a Preferences problem. Nope. I tried moving the preferences to another folder, testing to determine if the problem still existed, and then moving the preference files back into the Preferences folder, with no luck. I tried moving every preference file that I could out of the Preferences folder and then opening windows, but the problem is still there.

Can anyone out there shed some light on how to fix this?
John Melby
Emeritus Professor of Music
University of Illinois at Urbana-Champaign