getur einhver sagt mér hvað þetta þýðir og hvernig ég losna við þetta…. kemur á mínútu fresti í /var/log/messages

Jun 21 17:04:19 black12 kernel: hda: packet command error: status=0x51 { DriveReady SeekComplete Error }
Jun 21 17:04:19 black12 kernel: hda: packet command error: error=0x50
Jun 21 17:04:19 black12 kernel: ATAPI device hda:
Jun 21 17:04:19 black12 kernel: Error: Illegal request – (Sense key=0x05)
Jun 21 17:04:19 black12 kernel: Invalid field in command packet – (asc=0x24, ascq=0x00)
Jun 21 17:04:19 black12 kernel: The failed “Start/Stop Unit” packet command was:
Jun 21 17:04:19 black12 kernel: “1b 00 00 00 03 00 00 00 00 00 00 00 ”
Jun 21 17:04:19 black12 kernel: Error in command packet byte 4 bit 0
Jun 21 17:04:19 black12 kernel: cdrom: open failed.