Mine is always empty, and like I said, I don't think it's limited to live mail but possibly to all live programs.
It may have something to do with a feature I just havent used yet or maybe a feature live mail does not use that other live programs do.
Doesn't seem like there is any need to worry about it.
I had someone a LONG time ago tell trying to explain to me how EVIL Microsoft was because he kept deleting this weird IP address from his routing table and "Microsoft" kept putting it back! He was sure that the address was used to spy on this internet traffic. Can you guess what that address was?