I am having a weird java problem - For some reason quite often when I open a dialog it becomes black. When I force a repaint (for example, draging it out and into the screen
Generally every problem I've seen regarding java flickering, black windows etc was on an ATI card. Even I have the issue on HD3450 and Win7 64-bit.
See also: https://superuser.com/questions/266332/flickering-java-application-gui-on-windows-7