Chess.com hacked?
Dunno but I just got disconnected from a game and my computer couldn't load the live chess portion of the website until after I already lost that game on time. Two moves away from checkmate and it happened.

Hi Mochilero,
It sounds like you are experiencing internet lag. No one has hacked the site, I assure you :-)
http://support.chess.com/Knowledgebase/Article/View/91/0/why-did-the-clock-times-suddenly-change-the-clocks-seem-broken
http://support.chess.com/Knowledgebase/Article/View/121/0/what-is-lag-and-what-are-the-colored-lag-indicators-in-live-chess

That has happened to me as well lately. Many times just seconds away from winning on time and suddenly I freeze up and the opponent wins. Do you happen to have a wireless network adapter? I think it started happening to me after I bought mine.