Backups

I've run into an odd situation with one of my Xen hosts. Backups run through the browser work fine. When they are executed through the scheduler, they fail with a message

"xxx.com Failed to create destination directory : Time -"

and

"Backing up xxx.com to /home/backup/xxx.com.gz on SSH server xxx.com as root .. .. backup failed : Failed to create destination directory : Timeout connecting"

I'm not sure where to go with this. I run into a similar issue on the same server within a CentOS guest where something simple like pflogsumm when run through the scheduler returns all empty responses but if I manually click on it through Virtualmin it runs fine. I don't know if I've screed up an environmental variable or what.

Suggestions?