Broadway - 4:48 pm on Nov 30, 2012 (gmt 0)
I'm sorry for your recent change. In June I had a Panda gain that was later taken away. This whole thing is simply no fun.
And I'd be the first to agree that a few days of better traffic doesn't mean it will be lasting.
I noticed you state a date Nov. 17th. The reported Panda date (seroundtable) was the 21st. The three big effects I've had from Panda exactly correlated with the date others reported.
SeRoundtable, on Nov 20th states they contacted Google and were told that there had been no Panda update over that previous weekend.
I'm no expert on Panda "flux," nor the veracity of what Google says, etc... but when looking for your solution, you might keep an open eye on what might have caused it. Best of luck.