***WARNING: This involves editing the registry, if you are uncomfortable doing so, then do not proceed.*** Close down MSN Messenger completely Go into regedit delete: \HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger and \HKEY_CURRENT_USER\Software\Microsoft\MSN6 one to i did make backups first Restart MSN Messenger 6 and sign in. If this does not work, repeat and reinstall MSN Messenger 6.