I use Tumblr Savior myself (and I'm glad you mentioned this, because I needed to add keywords about the new movie to my filters!).

That's odd though, because I haven't had a problem with it. I've heard that if you have too many keywords in the list, it really slows down, and for me there's a lag between my dash loading, and posts being hidden -- perhaps it's slowed down to the point where it just stopped, and removing some filter words would help?