Avast! keeps stealing 6GB of HD space

Is there any way to stop the new Avast! from using an additional 6 gigabytes of my hard-drive in Windows 7? I think Avast! is making backup files or restore points. Every time I delete them using disk cleanup (going from 14GB to 20GB free space) Avast! will take it back on a later reboot. I’ve never had this issue with older versions, so I’m not sure what to do now.

see here https://forum.avast.com/index.php?topic=53253.0
scroll down to Farbar Recover Scan Tool … follow instructions and attach the two diagnostic logs here

Essexboy will then take a look when he is online later today…

Maybe I’m paranoid, but I find Farbar too invasive and wouldn’t feel comfortable sharing. If there is a way to prevent Avast! from making these unwanted backups, please let me know. If this is a common update issue, maybe I should uninstall Avast! and reinstall from scratch. If the new Avast! requires this additional HD space then I’d be better off with a smaller & lighter AV.

Maybe I'm paranoid, but I find Farbar too invasive and wouldn't feel comfortable sharing.
you can mail the log to Essexboy if that is OK?

he will give you the mail address when he is online …