Hi Chris,
You'll need more information. From th elog above you can see the following.
[I] 2013-06-11 14:35:36.422 Subtask process [subtask id=5941] was sent to the Job Server [USRANAPD11:3501, PID=2644]. (TSK-10088)
Go to the logging directory and look for the jobserver log with this PID=2644. It may have some more clues to your issue.
Thanks,
BW