5 Years? That's nothing.
The hackers just posted the Names and Home Adresses of people from a 2001 sweepstakes.
http://www.huffingtonpost.com/2011/05/07/sony-removes-data-stolen-hackers_n_858913.html
Seems like it really might of been disgruntled hackers over the Geohotz thing... if they start posting everyones info online.....