I've been having a strange error for the past couple of days when I open programs. It doesn't happen every time but when it comes up it's an annoyance. When I open up a program, for example Nero, I get a message saying this (this isn't the exact message, but as close as i can remember): "For your own protection, Windows XP has closed the following program: Windows Explorer" I don't know why this message is showing, nor do I know why it's Windows Explorer that I have to close. Once I close the message the screen goes blank before (usually) the screen goes back to normal with none of my programs running. There are occasions where nothing comes back and I have to manually start explorer.exe again. If I have to do this I get the error the second I enter another program, to the point where I have to restart to get things working again. I've done a full adware and spyware check, and nothing came up, and I also did a virus scan which also didn't produce any results. Does anyone have any suggestions as to how to solve this problem.