Your MSN account may be compromised if MSN continuously logs you out and forces you to log back in. If you notice a pop up that announces your login to your account this is proof that someone is accessing your account. Immediately change your password for your account and determine what information has been compromised. If there is an issue, report identity theft to your local law enforcement, your email host, credit reporting agencies and file a Complaint and Affidavit form with the FTC.
Deter, Detect and Defend guidelines can be found at OnGuard Online.