[ubuntu_studio] tuxguitar gui smearing on mouseover

view story

http://ubuntuforums.org – Hi everyone. I'm having a problem with tuxguitar. Everytime I my pointer crosses the window the gui smears and gets this weird mirror effect of the menu bar and window header (see screenshot). How can I fix this? Attached Images Screenshot - 01192013 - 08:05:04 PM.jpg (85.8 KB) (Hardware)