wbadmin backup to 2003 server issues

[nsanto17]

i have a 2008R2 server that backsup to a network location and after a few days of running fine the backup fails. It says there is not enough server storage to process the command. If i run the backup job manually it fails yet again. If reboot the 2003 server (backup location) the backup runs fine for a few days. Once the backup fails again i need to reboot the 2003 server. I have played around the IRP STACK size registry fix that people talk about but that does not seem to fix the issue.

The 2003 server has plenty of storage available(over 750 gig free).

Does anyone have any solutions to this problem.

Thanks

Nick