Corrupted graphics in WM / X51v

[W3bbo]

I've got an X51v and a lot of the time I get corrupted graphics, especially in the Soft-button bar at the bottom of the display. Sometimes individual letters aren't painted either, this happens everywhere (like on the Start Menu, the Today screen, and the Soft bar).

Anyway, I ran this GAPI benchmark (get the Zip/ARM version) and I get the same problem, but it's 100% reproducible... which makes me wonder if maybe it's a problem with the application and not the OS.

I'm running BIOS A12.

Thanks