The Hosts file
I'm trying to block some sites. When I open the hosts file in wordpad. to make a 127.0.0.1 entry (making my system block by reverting back to itself), it takes some time for it to work, and now when I delete the entry, the site won't load again.
I guess there's some step that I'm overlooking- even rebooting Windows isn't making the deleted entry load again.