Hi. I have an application I'm working on that, perhaps 1 time in 500, hangs the entire system on startup. And by that, I mean that the entire OS freezes including the mouse pointer, and no input is accepted from the keyboard. I can't even imagine what I could be doing from within the confines of my program in order to cause these system-wide effects, but I assume that it's some kernel mode thing. Does anyone have any tips on debugging this sort of issue? This is a C++ OpenGL application running on Windows 7.