i have(had?) an Account since 2009,and never had any problems,and today, when i went to log-in, the site tells me the password is wrong, and when i try to change it it says the e-mail doesn't exists,Now im Writting this because my friend reported the same thing;
I think this might be related to the new Dead zone game,I started to play it and invited 3 friends to the game, we all logged to our respectives acc's several times in the same computer for at least a day.