tedster - 4:35 pm on Mar 20, 2011 (gmt 0)
There is something quite "non-standard" in this period that follows the update - our old expectations are being dramatically disappointed. I'm thinking this reflects how radically different this new algorithm is, as well as how new it is.
The quality scoring assigned by Panda seems to be extremely sticky and for now, at least, almost impossible to change in a dramatic way. Panda is not acting like a traditional "penalty" at all, and it may be a mistake to think of it in those terms.