This is a problem that I noticed with the previous version.  When I scroll downward in a fence the icon text will leave behind artifacts.  I seem to recall that these artifacts stayed in the fence until I either scrolled up in the fence or refreshed the desktop.  (Not so sure about the desktop refreshing, though.)  Anyway, the problem still persists in the latest version (just updated), except that the artifacts fade away along with the scrollbar when I move the cursor off of the fence.  I have tried changing the font for the icons and it still happens regardless of the font I choose.  I also made sure that none of my other UI enhancing/changing software was running and tested the "artifact bug" again and it's still there.

Not entirely sure what's happening here, but it does seem to have some sort of relation to the scrollbar because, as I said, the artifacts fade out right along with it.

I'm running Windows XP Professional on a 2.53GHz Intel Core2 Duo (overclocked to 3.02GHz) with 2GB of RAM, if any of that info helps.