AlyssaS - 3:06 pm on Jan 17, 2012 (gmt 0)
Agree that there are two updates - Jan5th and Jan14th. IMO the first one was to do with scrapers/duplicates and the second was to do with link quality and neither was Panda. G seems to have been playing with both since Dec.
(P.S. I'm sure we saw something similar at the start of 2010 - there was a scraper update late Jan, a link update Feb 8th and then Panda.)