Chrome is trying some aggressive tactics in its developer builds (I think that is cool). What they're doing is speculatively opening sockets to servers, and also opening a second socket if their first attempt doesn't get a response quickly enough. It's pretty easy to see how a bug in this stuff, or even just the expected behavior, could trigger abuse filters. But, as I said, I think it is worth doing. All these web startups will make more money if the Web is faster.
Also, Namoroka is the Firefox 3.6 branch. Try Firefox 4 dev builds!