Some guy called maddox claimed that he hacked Valve. I got the whole story in dutch: http://tweakers.net/nieuws/47185/Opnieu ... pdate.html
and in english:
http://www.theinquirer.net/default.aspx?article=39032
http://www.dailytech.com/STEAM+Hacked+U ... le6972.htm
its prolly real, and valve just goed owned.
and the hacker is someone from an age between 15-25 (i just guess that with his "name" and his way of talking)