Change your password to a hard password on MSN.com . There has been a rash of Hotmail/MSN/Live, Yahoo and other accounts getting hacked to send spam from. I have had a number of customers as well as my best friend, have this happen.
For a hard password, I suggest coming up with a sentence that is easy for you to remember and then follow this example.
I might (I don't, but...) use this sentence:
I have two cats named Lily and Tagdh.
I use the first letters of the words (caps and lower), use the number for the number words and symbols for words that can be symbols.
This sentence would get this password: Ih2cnL&T or Ih2cnL+T depending on which symbol the site will accept.