only those panic forcing price down, there is no real fundament, because

 - MTGox is no longer main exchange, they'v held about 20-25% world volume trade before this halt
 - if people on MTgox or elsewhere arer freneticly selling, who is buying? You can only sell if someone buy!!!

so let me gues, this has only technical backround, but histeria all around mostly supported by hype that MTGox is over brougth more than has been expected

MTGOx is not author of BitCoin, there is another 80% of market out there to cover trades with BTC
wake up, world has been changed already, just take a look

check out price, maybe it is time to invest for long run