I remember Jason (of the Archive Team) telling me that Yahoo! had very little bandwidth that they were allocating toward Geocities and that downloading was horridly slow. Getting even 1MB/s was nearly impossible.
I'm wondering if Yahoo! increased the available bandwidth (or maybe everyone else just stopped using it, increasing what was apparently available) so that when you got to it then it was nice and zippy compared to when the Archive Team hit it earlier in the year.