I usually follow the results for the keyword "sex"
Its a pretty good indicator of where they are in the update
The term until August had 200 mill results - during the August update they dropped it to 60 mill where it stayed for about 2 weeks - then recovered when they added the "serving 8 billion pages" statement on their home page and then the "sex" results went to around 398 million
This week they were up to 400 million until Thursday when they dropped to 78 mill.
Im still seeing most data centers right around the 76-78 mill results so Id have to say theyve got a bit to go
I did see the Google Directory has been updated with changes in positions as of Friday, and a backlinks update that looks like its about done. I havent watched PR in some time but Im told that it hasnt wavered too much yet - so Id be looking for that soon
Bill - thats about the normal "dance" when they are trying some new algo out which is what I think they are doing this time
Looked almost exactly like the one in August so Im pretty sure that things will take the 2-3 weeks to settle out with "freshbot" runs