I know other have have problem , and base on my research it seem those problem be localized . this modem work great in State College , pa on Comcast . all I have to do be plug it in and make a call to Comcast for provision . a few more minute of configuration in the admin area for some custom thing and it be ready to go . have not have to touch it since . ca not really tell you whether its faster than the rental modem . I just do not use it that hard to notice .