PokerTracker

This happens often.

I will bring the PT3b3 window to the front, and in the area where importing hands shows, most of that box will be clear, and I can still see the table I was playing.
Scrolling up and down fixes the problem.

This sounds like a problem with Windows. What version of Windows are you using? Are you using a non-default theme or any software that changes the look and feel of windows?

XP Home, I have a custom background but thats it. I have Windows update enabled, so its as up to date as it can get.

I have this too sometimes with an updated XP prof.

I had this kind of problems in the past with various softwares. The problems seem to be caused by either the video hardware or software used with video board. Changing to different video boards have make problem do away.

I get a similar thing happening except that the import area is black. Minimise and restore fixes it.