Hi there,
Every time i clean my Win 8.1 64 bit computer with Spybot 2.2, there are of two red warnings of threats in the registry. It is a Malware-005 Win32.2UrFace.bho located in the HKCR\Interface. Even if I delete these, next time they are back. It seems they cannot be removed. I use the Firefox latest model, if that can be at any help.
