I have an issue with the debug tools window. It appears on its own periodically. I have turned it off in the Evaluation menu, and have gone to "Debugger Controls" and deselected "Show Debugger Tools Window". When I try to move it, it goes away, then comes back in a few minutes. Rebooting does not help. It happens on all notebooks. I am using Mathematica 10 for students. Any suggestions, besides uninstall/reinstall?