Hi Zaki,
You are correct, it seems that it is still occupying the resource even the tape was ejected. Once we put a new tape, the backup job stops immediately.
The Symantec drives were installed. As a matter of fact, we have 3 installations and 1 of them is OK. All installations are running on Windows Server 2003 and it stops automatically when I run the backup manually.
Thanks,
Ernie