Comment 10 for bug 1124576

@Chris,
  For reproduce, I'm sorry that I can't really help much. It just happens in general use. Often times its when I'm using firefox and scrolling. My browser window is always on the second display (non-laptop display) and scrolling seems to likely trigger it.
   Sorry for being very vague.
  I can definitely try a ppa build if you or timo could get me one.
  I'm currently running a backlevel version of xserver-xorg-video-intel 2.21.0-0ubuntu1 as 2.21.2-0ubuntu1 was unusable. (comment 42 on bug 1124576), but I'm willing to try a build.

  This is my primary system, so poking around and trying to recreate bugs or test new X (rather than using something stable-ish) means completely disrupting my other work. I'm clearly interested in it all "just working" for 13.04, so I'm interested in helping, I'm just saying it is invasive.