Steve,

Scour your code/classes looking for all references to LockScreen, something somewhere is setting it on during those random times.

>The LockScreen Property is set to .F.. The odd thing is this "dissappearing act" seems random. I can drag another window accros the form and all is well. Then at other times the controls(only the part under the other window) will be affected. Maybe there is something changing during the life of the form that causes it to be affected by another window. I thought that maybe it was a video card problem. But it happens on more than one computer.