Content encoding error in all browsers and limited internet in program

I was using my main computer as normal until mid afternoon, at which point all of a sudden I begin having network problems. I start disconnecting from multiplayer games and web pages won't load. Specifically, Starcraft 2 will let me log in and authenticate, but won't let me connect to games. When I visit websites, 24 times out of 25, I'll get "Content Encoding Error The page you are...