According to Seroundtable.com and WebMasterWorld Forum there seems to be a small update going on over at Google known as a data refresh.

After reading the posts at WebMasterWorld most people seem to be noticing a drop in rankings. Sometimes as much as hundreds of rankings for their main keywords. Some people seem to be noticing hits towards relatively new sites while others are seeing sites get out of the Google Sandbox.

Hopefully this update doesn't have any major repercussions to anyone's business during this upcoming Christmas season.