I have had several new Sony DDS-4 tapes that backup very slow and some that won't even mount I can't even retention them. I try to cancel the job but it hangs. I can eject the tape by pressing the drive eject button, but I can't shut down the BE10 services and the job won't cancel. I have to power cycle the server to cancel the job. I have several other Sony, Fuji and TDK dds-4 tapes that work just fine. Has anyone seen this before where bad tapes can hang the server?