I've been using Ubuntu 12.10 for several months now, and yesterday I upgraded to 13.04. It's working great except for one minor bug that bothers me alot.
Everytime I open the dash the backround is made up of pixelated green and purple squares instead of the nice clean color it should be. Here is a screenshot.
Screenshot from 2013-04-26 19:01:57.jpg
Any ideas of what to do to fix this? The dash is a little slower to start up then usual, but other then that works fine. This is just really annoying. Any ideas how to fix it? I've tried restarting and that doesn't help.