Sony announced today that they discovered that personal information was compromised on the playstation network.
News : Consumer Alerts | Consumer Alerts | News - PlayStation.com
They "SAY" that credit card info was not compromised, but they have all personal details, billing address, etc...
SO if you used the same email/password on PSN as any senstive accounts, change it immediately. Watch your card if you used one on PSN as it took them 3 days to admit they were hacked and 3 more to admit information was stolen.