This bug was fixed in the package xorg-server - 2:1.10.4-1ubuntu5
--------------- xorg-server (2:1.10.4-1ubuntu5) precise; urgency=low
* debian/patches/511_Update_border_clip_in_compAllocPixmap.patch: patch from upstream to fix window border traces left behind when switching windows in metacity. LP: #759203. -- Steve Langasek <email address hidden> Fri, 21 Oct 2011 23:04:54 -0700
This bug was fixed in the package xorg-server - 2:1.10.4-1ubuntu5
---------------
xorg-server (2:1.10.4-1ubuntu5) precise; urgency=low
* debian/ patches/ 511_Update_ border_ clip_in_ compAllocPixmap .patch:
patch from upstream to fix window border traces left behind when
switching windows in metacity. LP: #759203.
-- Steve Langasek <email address hidden> Fri, 21 Oct 2011 23:04:54 -0700