Apparently it wasn't DDOS, just panic selling.. Statement from their Facebook page:https://www.facebook.com/MtGox/posts/455962117821534
Trying to trade was a bad idea.. 1hour 12 minute trade delay. Awesome.
Dusted off the BTC mining hardware and started mining Litecoins today.. I'm skeptical that Litecoin's faster confirmations will overcome Bitcoin's first mover advantage.. Guess we'll see if/when MTGOX starts dealing in LTC.