Google Crawling Without Identification?

[Staffa]

3/15/2008 2:48:33 PM----74.125.16.70----/Default.asp ----Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/2007030919 Firefox/2.0.0.3
3/15/2008 2:48:37 PM----74.125.16.70----/Default.asp ----Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.8.1.12) Gecko/20080201 Firefox/2.0.0.12

Today, took one page and css file, no robots.txt and no images.

Does anybody know about a specific reason as to why ?

[tedster]

Might be a human inspection from Google, rather than a googlebot crawl. That Google IP address does not have reverse-DNS set up, and googlebot crawlers all do.

[Staffa]

Thanks, tedster.

What made me suspicious was 1 IP number, a 4 second interval and 2 different user-agents which together usually means not much good.
Weird way of behaving, that's why I checked the IP number.