Were you using firewall software on your computer? If not then maybe you were letting in a bunch of traffic that the router's internal firewall has now put a stop to. Can't think of another reason why a router would speed things up really.
Well, apparently, google is great but it filters out tons and tons of searches to give us the best results but what if we really want to learn something new? May be this will be the answer. http://blog.wolfram.com/2009/03/05/wolframalpha-is-coming/