Thanks for the replies.  Everyone who did so suggested that the tape 
was not rewound.  Unfortunately, that's not case.  I've made sure to 
eject the tape, reload the tape, and run mt -f /dev/st0 rewind, and 
then mt -f /dev/st0 status which shows:

  $ mt -f /dev/st0 status
  drive type = Generic SCSI-2 tape
  drive status = 1107296256
  sense key error = 0
  residue count = 0
  file number = 0
  block number = 0
  Tape block size 0 bytes. Density code 0x42 (unknown).
  Soft error count since last status=0
  General status bits on (41010000):
  BOT ONLINE IM_REP_EN


-- 
Seeya,
Paul

GPG Key fingerprint = 1660 FECC 5D21 D286 F853  E808 BB07 9239 53F1 28EE

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