Random Crashes??!!

Well I was in the lobby with my clan mates talking, then I just froze and crashed. I was like okay...... Ill just restart it up again. So i restarted again then rejoin them. I was talking again then when i clicked join game, i crashed again. I was like okay now this is getting weird. So i turn it on again. I froze then crash when i click a channel. Is there something wrong with my computer? Or CrossFire. This never happened to me before. It happened after the "bug" update (On July i think, I'm not so sure)