bpbkar is the process that runs on the client wwhen a backup is run.. 

To enable the log for bpbkar, create a directory <install path>\Veritas\Netbackup\logs\bpbkar
Increase the verbosity from the admin console
Run a backup and you will see where exactly its hung..

What is your backup selection? If its ALL_LOCAL_DRIVES, try to take backup of just C:\ in one policy.
Check the system event log.

check whether anti virus may be scanning files in C:\ 

The C:\ drive is usually smaller than the other drives. You could be experiencing low disk space. Read the article titled "Low Disk Space" in the articles section of the forum.
https://www-secure.symantec.com/connect/articles/l...

There are several reasons why C drive is failing:
- Disk space issue (as Stumpr mentioned)
- Check the Volume Shadow Copy Services...
- Disk performance issues (RAID5 or RAID6 issues)

Predrag

I'm having the same hang/queued problem when running a backup on the media server it's self.  Remote backups using the media server work.  It first started hanging on the backup scan, so I disabled that and it now hangs with a queued message.  I've unloaded the magazines and loaded 8 new LTO3's.  I'll try another test.. Ron

PS;  I'm just running a simple directory backup for testing..  BE 12.5

Hi,
   Disk space issue in c drive
  Check the Volume Shadow Copy Services is manual
  Disk performance issues (RAID5 or RAID6 issues) & I/O read\write operation.
    Check memory utilisation

  Eventough this will not work just delete the policy & recreate policy.