CodeFest Japan 2005

FSIJ announced CodeFest Japan 2005 (currently only in Japanese language), on June 3rd at Tokyo.
CodeFest is face-to-face all night event for hackers. Every hackers can hack his/her subject, have brain storming with others, do release engineering, solve bugs, and so on.
I'm planning to attend (although there is important football game, Japan vs Bahrain, elimination of World Cup Germany) and considering what I hack at this event. Fighting with CUPS and Ghostscript is one of big challenging.