Yep, I got one of these crashes myself on current precise, although not certain exactly how I did it. Was messing around with gnome-panel at the time.
This was with libxcb 1.8-2 ** Attachment added: ".xsession-errors" https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/905686/+attachment/2730690/+files/.xsession-errors -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libx11 in Ubuntu. https://bugs.launchpad.net/bugs/905686 Title: nautilus assert failure: nautilus: ../../src/xcb_io.c:528: _XAllocID: Assertion `ret != inval_id' failed. To manage notifications about this bug go to: https://bugs.launchpad.net/xlibs/+bug/905686/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp