I can still repeat this with compiz 1:0.9.4+bzr20110415-0ubuntu2 simply by closing any window while it's MT handles are still activated (you need to use a keyboard shortcut of some kind to close the window, e.g. Alt-F4, or Ctrl-d in a terminal window).
I'm adding a gdb stack trace that will hopefully provide the needed info. ** Summary changed: - compiz crashed in Unity::MT::GrabHandleGroup::hide() + Closing a window with activated multi-touch handles crashes compiz ** Attachment added: "gdb.log" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/749728/+attachment/2086073/+files/gdb.log ** Visibility changed to: Public -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/749728 Title: Closing a window with activated multi-touch handles crashes compiz _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp