Shoutbox

Ok, I blocked and deleted a contact from my msn list. Now somehow, and I have no idea how, whether it was him on his own or a mutual friend that helped him, but he managed to get switched from my block list and put back onto my allow list. I did not put him there. It virtually happened before my eyes.  One minute he's blocked, the next he's messaging me cuz he isnt anymore?

I know it must be some sort of hack, but what I'd like to know is 1). how he did it, and 2). how do i prevent him doing it again.

I thought that adding someone to your block list meant they stay blocked. If there is a way around it, there must be a way to secure it.

Totally shocked and scratching head here (my head really hurts now )