yesterday I received an email, through facebook, with a new "password". The mail contained a document with new data to be used for logging in. I ignored that, went to facebook, could not log in, changed my password through "forgot password?" and went to the helpdesk. Facebook never sends mails concerning your password, and the document contains a virus that empties your databanks for anything concerning that particular password. I did not open this!
Then I could not log in to any ning network any more, had to change all ning passwords!
So be aware, do not react to mails concerning passwords, or mails that ask for your computers IP number. That happened an hour later, a mail from a bank, also a hoax.
BE AWARE, SOME ONE'S PHISHING!