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Thank you for confirming Monica, we've been doing some high quality link acquisition to the domain in order to get a bolstered profile.  I strongly suspect this is some Penguin trails still going on.

Has anyone else noticed that sites that seem to have gone through a positive penguin recovery after 3.0 had results jumping around?

It seems to be happening with the biggest keywords that were damaged by Penguin 2.1 but we are seeing jumps from Page 2 in the morning to Page 12 in the afternoon.  It seems very unstable at the moment and I was wondering if anyone else is seeing something similar?