heini - 10:17 pm on Apr 14, 2003 (gmt 0)

Putting up a robots.txt is probably a good idea. But, as HitProf says, this is normal behaviour for Fast's bots.
I would expect the bot to come back at some point over the next weeks, to spider the main pages, i.e. the pages in the main navigation, and then, in a third take, get most or all of the pages.