I agree that all these 3 bugs look like the same issue. This is actually very common error in GTK, I've just checked that gimp 2.6.11 from Ubuntu 11.04 is affected as well.
Still, it might be better to ask original reporters if they can produce a backtrace of their bugs. For reference, this is how I made it: (make sure mouse or tablet is plugged in) $ gdb inkscape $ break _XError (answer 'y') $ run --sync (unplug the mouse/tablet or wait for a USB fault) (click on the window with some other pointer) (this should trip the breakpoint) $ bt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/818543 Title: inkscape crash (X error) when USB mouse is disconnected To manage notifications about this bug go to: https://bugs.launchpad.net/inkscape/+bug/818543/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs