As Marianne says it comes up all of the time this one

There is a bug with a fix listed in the Late Breaking News but more often than not it is down to something crashing somewhere.

To actaully clear them i have found the method that never fails is as follows:

1. Make a note of all of the job id's involved

2. shut down NetBackup on the Master

3. Go to \netbackup\db\jobs\ and delete the bpjobd.act.db (make sure you do not delete the bpjobd.db !!)

4. Go to NetBackup\db\jobs\ffilelogs\ and delete all the files with the number that matches your job id's

5. Go to NetBackup\db\jobs\trylogs\ and delete all the files with the number that matches your job id's

6. Start NetBackup up again - all done

Of course what you need to do then is find out why they are happening - server being rebooted, processes crashing etc. Check your logs and event logs for clues

Hope this helps