I've been using dual screens for awhile, and this black box is always on the second (extended) display in the upper middle of the screen: http://img214.imageshack.us/img214/2422/boxwx.jpg
It isn't selectable, nor does it come through when windows are run over it. It just looks like a black box on the background wallpaper of the extended screen. It's not there when screens are duplicated, but it is on the other monitor when I switch the extended screen to my primary monitor (making it the extended screen). I'm using HP ZR24w and HD 5850. It's been there through all the recent cat drivers.
Any idea how to make it go away?
It isn't selectable, nor does it come through when windows are run over it. It just looks like a black box on the background wallpaper of the extended screen. It's not there when screens are duplicated, but it is on the other monitor when I switch the extended screen to my primary monitor (making it the extended screen). I'm using HP ZR24w and HD 5850. It's been there through all the recent cat drivers.
Any idea how to make it go away?