Sun Jun 23 14:05:30 PDT 2002
Done Jobs/Error Jobs
  - sorting of jobs has error jobs and then done jobs
    so 'remove_done' will retain error jobs. 
  - sort these by completion time and remove all but the
    last N.  You will then have to reorder list by other
    criteria.
   (Reported by: Akop Pogosian <akopps@CSUA.Berkeley.EDU>)