Backup Issues - Permissions?

[DreamWeb]

Hey folks. I'm trying to use the backup feature of Plesk.

I'm running Fedora Core 2.

This is the error I'm getting (this is sent to my email upon failure)

"Following error is occured during scheduled backup process:

Unable to create session directory: [Errno 1] Operation not permitted: '/var/lib/psa/dumps/tmp/2007-03-28-10.45.00.774547'"

These are my permissions in /var/lib/psa/

drwxr-xr-x 6 psaadm psaadm 4096 Mar 28 02:14 dumps

Any ideas?