Re: LolzSecurity(?) takes over mtgox IRC channel #mtgox and announces
hilarious, whether it's for real or faked: they did it for the lulz! 
Yea well this data damaged the community a lot cause money, value was stolen. Previous Lulz hacks didn't have this effect.
I meant the takover of the IRC chan, not the things that happened on sunday. Lulzsec was my first guess, but as you're saying, it doesn't make too much sense regarding their "daily business".