Though all six major exchanges quickly got together to issue a joint statement, this move by Mt.Gox is going to hurt investor sentiment in the trading of Bitcoins.  The statement which has been co-signed by all the six Bitcoin exchanges is reproduced below :

Mt Gox goes offline no explanation given but reports say it lost 350 million to a hacking over the year - 9Mt Gox goes offline no explanation given but reports say it lost 350 million to a hacking over the year - 91Mt Gox goes offline no explanation given but reports say it lost 350 million to a hacking over the year - 75