I am a new customer and choose to have Xfinity Internet connection it was a great offer because I took also Cisco DPC3008 Cable Modem and Linksys E900 router all free (with mail in rebate). When I connected with my modem it was great. My spead was ~25 mbbs. But wen I used the router and I checked my speed it was not even 1mbbs!!! It was soooo slow. It took me a lot of energy and phone calles to fix it. And I found the solution in the knowing everything google. Check it here: http://brikis98.blogspot.com/2012/02/got-slow-download-but-fast-upload.html?m=1 The solution Go to http://192.168.1.1 and login to your router. If you've never done this, look for instructions that came with your router or do a google search to find the default username and password. Find a page that has QoS settings. For the E1200, you need to click on "Applications & Gaming" and select the "QoS" sub-menu. Disable WMM Support. Click save. That's it. The second I disabled WMM support, the download speeds for my laptop and iPhone both jumped to 24 Mbps, perfectly matching my desktop.
... View more