Long time lurker, first time poster as I just recieved my N900 and have been playing with it for a while - fantastic device!

I am however having some problems with butterfly constantly re-adding unwanted contacts (people I've either blocked or removed a long time ago) to my contact list - which is a bit annoying as there's 15-20 of them. I know that the MSN protocol isn't beautiful in anyway (as a contact is never removed from the server list unless the removal is mutual) but would it be posssible to not have my unwanted contacts re-appearing every time I go back online?