I'm having an issue on Live where I am not receiving messages that are sent to me. I get no notifications to tell me I've been sent a message and they do not show up on my message list. I wouldn't even have discovered the problem, but when I logged on to My Xbox on xbox.com, I saw I had 4 unread messages that have been sent over the last 24 hours.
Anyone else experience this before? How do I fix it?