I just got a Comcast upgrade to my home router for new speeds and here is what I found out! My old speed measured was 30 Mbps down, 11 Mbps up.
The guy installed the new Comcast box and then I tried again and same speeds! This was from my PC which went through two hubs, and a cisco850 router before getting to the Comcast box.
I then plugged a laptop right into one of the Comcast ethernet ports and got 120 and 11, which is sweet! Well, the 120 is sweet.
Then I plugged the laptop into the cisco850 and I was back to the 30Mbps again. The cisco is rated for 10/100 so I thought it would go up higher, but no such luck. So now I need to get a new router for my home network and see how that performs!