avast and system restore

Hi, Sorry if this has been asked before, Ive had avast installed since ive built a new win7 pc. Ive recently found out that system restore doesnt work due to the common error.

“system restore could not access a file” and the event viewer shows “An unspecified error occurred during System Restore. Additional information: 0x80070005”

Ive tried turning off avast when I do a restore but when the pc boots when completing restore avast is back on again. Would avasts self protection module affect system restore like norton apparently does?

Thanks guys

Also having problems with system restore, always ends up with a black screen and can not start windows 7, not even in safe mode ! >:(
last 2 times when i did system restore i have to reinstall windows from scratch ! and replace my back-up from c:drive.
Now i’m trying another AV (MSE) and have no problem anymore with system restore
after 3 years avast i say goodbye to this program …

I have never used System Restore on Windows 7 Home Premium x64 as Windows 7 Backup and Restore is very good:
http://www.microsoft.com/windows/windows-7/features/backup-and-restore.aspx