Hi, it looks like you're having problems with SharePoint item cataloging at the DPM server level. DPM runs a daily job to inventory all the SharePoint items that are included on the protected groups. this job might be failing. things to check:
- disable tcp chimney (search for "tcp chimney sharepoint dpm" for more information)
- re-run the configuresharepoint.exe on the WFE to re-register the vss writer.
hope this helps
Regards