Intermittent is an understatement. I had it constantly so I was playing with settings to see if I could fix it through the driver. Tried changing font size, thought for a short bit that "always show toolbar" was the issue, tried anti aliased fonts on and off (off is uuuggggggllllllyyyy ), tried switching to 16 color mode, tried turning on Windows XP compatibility, changed menu transitions, advanced graphics, turned vsync on and off, reduced and increased CPU usage, wait or don't for blitting. Every time it seemed like the problem went away... only to resurface. Then I figured, well, I'll have to run it full screen. Went back and verified everything was set back to normal. Half an hour later... no glitches. This one's going to be fun to find. Could it have anything to do with the 59Hz refresh rate that some LCDs appear to have under Windows 7? I've read of some other strange problems that has caused. (Oh, and first post, really sweet front end, thank you, I will be registering. Just need to get clearance from the wife. )