Ok.... so i will be using my computer normally and then, randomly, the program im using will turn black and the GUI will be very messed up until i move the window around (ghost trails). I can get everything back to normal except the menus which will always have this strange black box on them. This happens for the menus in pretty much all the programs i use except Firefox and Thunderbird (I think they have another GUI thing?). It also happens on my right click menus, which is a bummer. I included a screen shot from when it does it in Opera. Here: Any ideas on what is causing this or how to fix it?