Shoutbox

She was blocked. She can't send you messages. When you unblocked her, any messages she did send would come through. You can still see her DP and other information though. Blocking someone is like appearing offline to them and your normal status to everyone else (except in newer versions they can't send you an offline message either)

Sometimes I find Messenger doesn't quite get your status right (I've been online and no-one can see me, or Offline and they can).

Messenger Discovery can no longer accurately detect when a Chat Window is opened on one of your contacts computer due to a modification in the way Messenger works.