We had the same problem a few months ago. We made incremental backups of our Windows servers each day together with a weekly full backup. For our incremental backups we used the option "INCREMENTAL - Using modified time". This option was the reason of our problems, because every second time an incremental job started, the job engine crashed down. An example: Server A was fully backuped on Sunday, and incremental from Monday till Saturday. On Monday the incremental job finished successfully, whereas on Tuesday the job engine crashed. After restarting the service, the job performed well on Wednesday, however, on Thursday the engine crashed again and so on. It was very difficult to find out this, because we are running a lot of different jobs and this behavior is true to all of them. We think that this is definitely a bug in the Veritas software. We are now using option "FULL - Back Up Files - Reset Archive Bit" for full backups of our Windows servers and "INCREMENTAL - Changed Files - Reset Archive Bit." for the incremental ones and have no problems with the job engine anymore.