Rick_M - 4:45 am on Sep 30, 2012 (gmt 0)
I've lost around half my traffic since a sudden change in results about 24 hrs ago. Very weird patterns though with some phrases ranking well and others that were top 3 completely gone even with adding the domain name in the search.
This is not an EMD and I see it across several of my domains. None were affected by panda or penguin.
I hope it is just a partially processed update.