Backup does not run. Jobs can be found under Recent task only.
Result: No action was taken because there was no task created. The most likely cause of this issue is due to changes in the VirtualCenter Infrastructure (i.e., removing and re-adding an inventory item from the VirtualCenter or Host will cause ID mismatches). Please refresh inventory and re-create the job.
Virtual Center DB reached the size limit. (4GB for SQL Express 2005 or 10GB - for 2008)
Purge records and shrink VC DB.