I'm lost I can't add anymore people, i removed some people from my block list...see if that helped as i had the same problem when i could not block me but I only have 140 contacts so i don't see the problem...
If you only have 140 Contacts try giving it sometime. The Messenger servers could be just giving a wierd response to adding one. Do you have Mobile contacts shown on your contact list by any chance?
O.P. RE: MSN will not let me add any more contacts
Nope bit i have in the past...I gave it time tonight and it was fine...checked later and it was back to the usual...then it would not sign in later on tonight.