Sir, This is a known issue. Bug #40903. It would be a good thing to send an email to support@ironport.com, restate the application fault, this Bug number and your company information and serial number of your IronPort. The support person will add you to the bug sighting.
The Critical message is:
An application fault occurred: ('Lib/re.py _compile|233', "", 'nothing to repeat', '[util/Aquarium.py screenLoop|407] [util/InternalLibrary.py inverseExtend|328] [util/InternalLibrary.py __call__|769] [layout/Bare.py __call__|579] [util/InternalLibrary.py __call__|771] [monitor/message_tracking_results.py __call__|444] [monitor/message_tracking_results.py _perform_highlight|710] [Lib/re.py compile|180] [Lib/re.py _compile|233]')
can anyone tell me what this is?