hi all,
i keep seeing this errors in my windows 2000 event log,

Event Type: Error
Event Source: NetBackup TLD Control Daemon
Event Category: None
Event ID: 13831
Date:  3/17/2003
Time:  4:29:33 PM
User:  N/A
Computer: MARS
Description:
TLD(0) [2084] mode_sense ioctl() failed: Overlapped I/O operation is in
progress.


Event Type: Error
Event Source: NetBackup Device Manager
Event Category: None
Event ID: 0
Date:  3/17/2003
Time:  3:36:41 PM
User:  N/A
Computer: MARS
Description:
Could not get GUID for drive:"\\.\Tape2"

Event Type: Error
Event Source: NetBackup Device Manager
Event Category: None
Event ID: 0
Date:  3/17/2003
Time:  3:36:41 PM
User:  N/A
Computer: MARS
Description:
Overlapped I/O operation is in progress.

Event Type: Error
Event Source: NetBackup Device Manager
Event Category: None
Event ID: 0
Date:  3/17/2003
Time:  3:36:41 PM
User:  N/A
Computer: MARS
Description:
Failed to open NTMS session

any help?
thanks