Take out those last two lines in the hosts file. This error number indicates either a firewall blocking access or the server beeing off. Stop using these workarounds honestly...if you done nothing to cause messenger not to connect chances are fairly big its a serverissue, these will resolve themselves. If you are in such desperate need of beeing online use Windows Messenger or Webmessenger at those times.
More info (even tho more related to msg plus!) about the HOSTS file can be found
here.
Also this has nothing to do with Messenger Plus! nor with Plus!Live...requested moving to Messenger forum.
/ 
