Have you guys noticed if the Googlebot stays up toward the top of the online page most of the time? I think I have the same bot doing the work of several now.
It's possible; they've donea lot of updates lately; it's completely probable that one of the updates was to have one bot crawl vs a "get links then hit then visit later" strategy...
If you use a stats logger like awstats you can see how much data (in mb) they actually transverse (which would actually be a good way to deterime if they're truely crawling less than they used to, as you could compare bw usage from them one month to a prior month)