== Failed to kill process ==
* The Windows unit test boxes may randomly fail with errors like:
buildbot.slave.commands.TimeoutError: SIGKILL failed to kill process
Failure: buildbot.slave.commands.TimeoutError: SIGKILL failed to kill process
** This might indicate a hang while running the test** It might also mean that a test threw an exception that caused the test harness itself to fail, and the test running script timed out and tried to kill the browser* This condition should may not be caused by a specific checkin, and might fix itself upon the next cycle (when someone checks in).
== XUL Popup test failures ==