On one of our sites we have had a lot of similar problems running NetWorker 
7.3.3 with a STL L700 library using HP LTO3 tapedrives. The same type of 
library with IBM LTO2 drives did not cause any trouble.
Several times a week tapes were stuck in the drives (sometimes only one, 
sometimes more). Eject was not possible without powering off the tapedrive.
In our opinion this should be a hardware problem, and maybe it is. But 
after updating the server and storagenodes to Networker 7.4 SP2 the 
problems have disappeared.

Regards,
Hans

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