One of the drives sometimes keep the tapes for hours

Hi guyes,

We have HP MSL8096 library with 4 drives that connected to HP server running windows 2003STD SP2. The networker version 7.4 SP4

The problem is that one of the drive most of the time is loading the tape and keep verifing the tape for hours, and the is the error we get:

cancellation: none;
             completion code: ;
               error message: "verify label in progress on \\\\.\\Tape2147483644",
                              "verify label in progress on \\\\.\\Tape2147483644",
                              "verify label in progress on \\\\.\\Tape2147483644",
                              Jukebox `HP@4.0.1' failed to load the requested volume.,
                              Jukebox `HP@4.0.1' failed to load the requested volume.;
                 last update: 1313321173;
                    messages: ;
                        name: HP@4.0.1;
          operation instance: 1936;
            operation source: nsrd jb op;
                    progress: retryable;
             prompt response: ;
                      prompt: ;
                  start time: 1313321167;
                      status: retryable

Many thanks