Never had that problem and I've used DELETE FILESPACE numerous times.
     No tapes are mounted and cleanup is done during expiration processing.
     I'm using an V1 MVS server; hope this isn't something new with V2.


  *---------------------------------------------------*
  *  Rick Tsujimoto                                   *
  *                                                   *
  *  rtsujimoto AT cusa.canon DOT com                        *
  *                                                   *
  *  tel: 516-328-4554                                *
  *  fax: 516-328-4369                                *
  *---------------------------------------------------*