One of my sites was holding steady at #1-#2 for many months. All of a sudden it dropped 2-10 spots for all of its keywords (not after a panda update, in fact, no where near one) and has stayed there forever. I've thrown everything I've got to it, blasted it, gave it contextual links, EVERYTHING YOU CAN THINK OF. It just won't budge. It's not going down, and it's not going up either. It's frozen. Is this some kind of manual penalty? I'm at the verge of giving up on this site. My theory is that it got "locked in" and probably will never rise up again. Have any one of you ever froze in rankings? What happened in the end?