Here is a backtrace I got off the gdk_x_error. The description of bug 463168 indeed looks very similar, so this looks like a duplicate.
** Attachment added: "backtrace of gdk_x_error" http://launchpadlibrarian.net/38193398/backtrace_gdk_x_error.txt -- Nautilus file copy progress bar sometimes causes panel crash https://bugs.launchpad.net/bugs/510453 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs