> If I have the same username and password on another service, should I be rushing off to change my password right now?
My answer to this question is completely unaffected by the potential data leak at Sony: Yes. Yes you should.
Do you know that all the places you use that password for hash it correctly? You seem to be unsure (as is everyone else) on whether or not Sony stores passwords in plaintext, so why risk it? The only way you'll find out for sure whether or not you are at risk is if one of your accounts is compromised, so rather than waiting to find out I would take preventative action now.
My answer to this question is completely unaffected by the potential data leak at Sony: Yes. Yes you should.
Do you know that all the places you use that password for hash it correctly? You seem to be unsure (as is everyone else) on whether or not Sony stores passwords in plaintext, so why risk it? The only way you'll find out for sure whether or not you are at risk is if one of your accounts is compromised, so rather than waiting to find out I would take preventative action now.