GameMasterM - 2:09 am on Oct 5, 2004 (gmt 0)
Google is full. They have reached their limit. Notice how fewer of your pages are being visited by the bot? Also notice how the current pages in the database has been constant for over a year now? They are currently reconfiguring the algo and when done the index will be effectively doubled. The way it is written this can be doubled, with effort, as needed.
Read some of Chris Sherman's (Clickz) comments on this subject.