Does the cleaning slot actually show in the device list in backup exec? I have a cleaning slot designated on my tape drive however, because it's dedicated as a cleaning slot it's not recognized by backup exec as a valid slot for a tape. I was under the impression that designating a cleaning slot on the tape library itself essentially takes the slot out of availability and all cleaning duties are handled by the library itself and not backup exec. I think the bad part about this "theory" of mine is that backup exec will not recognize when the library cleans the drives and it will keep adding time to the "hours since last cleaning" attribute.