I was hit on Jan 19th, UK. I've never been hit by Panda in the past. It's rather unfortunate that both ATF and Panda update were released alongside one another. As it makes it much more difficult to know 100% which update we were hit by.
I have a max of 1 ad per page, so I can only assume I wasn't hit by ATF, but I've never been 100% sure.