Perhaps you're encountering this problem:
quote:
(mess.be, 15th of July 2004)
Allow list limits introduced
Zero1 says:
We have just recieved information that microsoft have introduced caps to the allow list of MSN Messenger.
Users that have an allow list of over 600 contacts already may experience contact list issues. If you have gone over this limit, you may recieve messages stating:
'contact name could not be unblocked, please try again later'
When microsoft were queried about this problem, they supplied us with a temporary fix.
Take a further look at this page to see how to (temporarily) solve it:
http://downloads.mess.be/seb0r/microsoft_email.htm