Getting 'Skipped for Optimization' Job state - PWA PS 2010

[Eaman]

I am getting Job State = Skipped for Optimization for Job Type = Status Update with %Complete = 16%.. Now this job type shouldn't be skipped for optimization as per the understanding that MS is intelligently skipping duplicate jobs. Moreover there are no pre and post jobs in queue for the same project. What could be the reason here? using PWA PS 2010