suggy - 7:00 pm on Jan 7, 2012 (gmt 0)
I check every single 301 I set up to ensure it's returning the correct status (google "HTTP Header Check") and that it's resolving to correct final destination.
Don't forget, Panda is just a big impotent bear playing snap with your page versus what it thinks searchers want for that phrase. It's supposed to be learning and get better and better at matching pages to searcher intent. I'm not sure it is though! Junk goes down in one iteration, only to be reborn in next (and vice versa for good sites). I think it has a real problem with short-sightedness. Doesn't seem to be able to 'think' beyond the obvious conclusion, which often has undesirable consequences. Then it's "DOH!" time again!