I have and still have a really frustrating problem with messenger.  Sometimes i talk to my contacts on Windows Live Messenger 8.1 and they don't reply, i get a message when they go offline which tells me 'the following message/s could not be delivered to all recipents.' Also, a very similar one which says 'your message was not delivered to jason' for example. At times i get either one of those two messages when my contacts are still online. I can't send instant messages to anyone sometimes because of that and the person i'm talking to never receives my message. Does anyone have the exact same problem as i'm having? I'd really really like to solve this and does anyone know what the heck is going on?

Your help would be greatly appreciated, even if we could communicate through this problem over email or something. Thanks.

this not a bug in MP!L this is most probably server problems, nothing you can do im afraid