Comment 7 for bug 506510

This X crash is due to error messages being printed to the log file after the log file has been closed. This was being done in the signal handler due to a Ubuntu patch. I've corrected the patch to not print these errors, which should eliminate this crash.

However, still whatever problem had caused the X error to begin with is still there, and it is likely that X will still be failing, just without crashing (or perhaps with a different kind of crash). This crash is hiding that information however. So the good news is hopefully this will unhide that information. After updating to version 2:1.7.3.902-1ubuntu7 please re-test your original issue; if it still occurs file a new bug. Hopefully apport will provide better information in this case now.