XFinity is a program developed Comcast, which is promoted via other free downloads, and once installed on your computer, it will add a toolbar, change your browser homepage and default search engine to xfinity.comcast.net.

To solve the problem you can see this article: http://malwaretips.com/blogs/xfinity-toolbar-removal/

thank you..what I'm trying to figure out why there are two bars at the top one says my.xfinity and the other one on the blue line says xfinity by comcast will this take both of them?

May be both of them will be uninstalled.

what will this leave me with if both are removed?

This is one kind of malware. Which is harmful for normal browsing. So if you remove both of them you will get a clean performance from your browser with default settings.