Can't Explain Network Speed Discrepancy Between Locations

why one of my two offices experiences significantly slower speeds when accessing the web. I'm a complete technology simpleton, so I haven't been able to figure out a logical reason for it. Here's the scenario:

Office 1..................................................Office 2
==========..........................................===========
Comcast Business.....................................Comcast Business
tests at 33 mbps down..............................tests at 7 mbps down
tests at 6 mbps up....................................tests at 3 mbps up
6 CPUs access Linksys SR216 10/100 switch..6 CPUs access 3Com Office Connect Ethernet Hub
switch accesses Comcast modem.................hub accesses Comcast modem

My laptop, and all other CPUs, perform significantly faster at Office 2.

Is it the difference between the switch at Office 1 v the hub at Office 2? I always thought they were sort of the same thing. I know I've taken some of the cables out of the switch in Office 1 and put them directly into the Comcast Modem and haven't seen any improvement.

Why on earth does my laptop perform so much better at Office 2. I've also moved desktops to Office 2 and they are noticeable faster at that location as well. I'm stumped. We access a major company's web site for account servicing, and it is twice as fast at Office 2...while using the exact same laptop.