Then I don't understand why you're having issues. I don't have them myself and several others don't as well...the only thing that I can think of is that your OS is being stupid about incoming connections; that or a firewall of sorts is reacting to the incoming traffic and maybe treating it as a potential DDoS? But then again, that would also happen with, say, IR-GTS. You're one of the weird cases. I'm working on a rewrite that I'm hoping will speed things up, no promises though.
@Mike Waggs: That can have plenty of potential sources. Check your firewall, ISP, and be sure that you have no open programs that bind to port 80 or 53.