It's fixed in the last svn snapshot upload. Thanks for the report and thanks for the fix ;)
** Changed in: xfwm4 (Ubuntu) Status: Unconfirmed => Fix Committed -- After painting several fast strokes in gimp, whole desktop freezes, not reacting to any clicks for several seconds. https://launchpad.net/bugs/61424 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs