There are early reports at WebmasterWorld that search engine results for queries specifically three words long, have been fluctuating. Here are some quotes...
Solid at position 4 or 5 for 4 months, this morning bouncing around 11,12,16
On yahoo.com I jumped from 4 to 2 today.
Yes, Yahoo page count for my main site is jumping a lot at the moment. Worth keeping an eye on.
Forum discussion at WebmasterWorld.