Registry cleaner backup file

Hello,

I have a question about the registry cleaner... Before I started the cleaner I chose to backup my registry. After I started the proccess, CCleaner was "Not Responding" but I didn't closed it. I started checking why CCleaner was keeping my processor at about 30-40% and I found out that it's creating the backup file.... and after about 2 hours the file reached 70gb. Is this a normal behavior of ccleaner? I'm starting to worry because I have only 90gb left on my hard drive.

Thanks.

sounds like you got wipe free space checked. in the windows tab, under advanced.

I don't believe CCleaner gives you an option to backup the full registry before cleaning it, but I may be wrong. As Ident said, that sounds more like Wipe Free Space