If the price starts dropping, you can rest assured Gox will lag. The lower they go, the longer the lag. Same lag, different excuse. Sometimes they lag because of success. Sometimes they lag because of panic selling. Sometimes they lag because of DDoS. Or, perhaps they lag to manipulate the price.
Yeah but this is the first time I've witnessed them shutting down. Seems convenient they are saying heavy DDOS while the price is dropping. I don't believe DDOS results in panic selling.
Right before their last shutdown, I saw two massive sell orders @ 30 cents. It appeared on the Tradehill site (which has not been working since then) right before Gox went down 12+ hours ago. I don't know if it's a glitch, but it wiped out all of the other active buy orders according to Tradehill's site.