I have the exact same "Website Blocking" problemo. A random Malwarebytes IP Block Test exposes the vulnerability, despite the "Website Blocking" feature being checked in the tray. However, if I uncheck and recheck it, and then bring up the Malwarebytes IP Block Test, voila!, now it's blocked. Have tried several mbam-clean/reinstalls to no avail. Don't remember it being an issue before MBAM 1.60.1.1000. It has been an issue, whatever the AV I happened to have installed (Panda, Avast, ClamAV). Currently, I'm using MBAM with ClamWin on XP-sp3. Any help sorting this out will be appreciated.