When AdwCleaner freezes (Not Responding) its usually caused by the service ucguard which it finds, but can't remove. Google FreeFixer, download and install it, then disconnect from the Internet, close your browser and run it. It will find the ucguard.sys file and tick the box to remove it (run Fix). Run AdwCleaner agian and you should find that ucguard has gone. If it has, you can reconnect the Internet. Note that ucguard does not show up when you use task manager to look at services. I don't know what ucguard does, but I don't want it!
Sorry, I put this in the wrong forum - should've been AdwCleaner Not Responding