Shaddows - 12:53 pm on Sep 27, 2012 (gmt 0)
Panda is not a penalty engine.
"Minus X" penalties are the result of manual actions, not algorithms (although, of cource, detection could be automated by way of internal algorithms)
Panda causes a score (generally perceived to be negative) to be applied to your page/page-group/site. The resulting movement in SERPs is NOT a set number of places.
Minus X penalties are rare. The usual "manual action" results are more subtle and thus harder to spot and understand than in the past.