I've researched this and cannot find any alert categories that match a "missed job" one fella had the same issue with 11d but tech support forwarded him onto http://engweb.symantec.com/enhancement/ enhancement to the product to make a request for a newer version.
I have been looking for that function some time. I have tried to create a rule using the "Error Handling" when you right click a missed job, but that doesn't seem to work.
But i guess i will make a request for a newer version then.