So, after installing my new Linksys router with 802.11G 54Mb I am getting much slower connectivity on the LAN ports. Took many hours of tinkering just to get the thing to work with Comcast. Their tech support guy laughed at me.
UPDATE: Still gettng sluggish response. Speedtest.net won't even run with Linksys in place. Makes me very reluctant to try this: Turn your $60 router into a $600 router.
UPDATE 2: Getting a decent response on my Macbook now, but nothing at all with a PC laptop.