Atomic - 7:44 pm on Jul 21, 2006 (gmt 0)

Yes, the titles are definately showing some changes. I've noticed this pattern as well.

1. Site loses indexed pages

2. Pages come back

3. Changes appear like titles, PR, backlinks

4. Go back to 1 and repeat.

It's not every site at the same time which is interesting. Each one is at a different part of this cycle at any given time.