Shoutbox

I've noticed that renamed contacts doesn't stay renamed when the contact renames itself. Is it possible to change this behaviour so that the name I've given a contact always stays to that name?

ie:
1. My contact John Doe has a display name of: "JoooOoooooohn".
2. I rename him with Plus! to "John Doe"
3. He renames himself in his MSN to: "I'm really annoying and changes my display name all the time so that ppl can't find me in their address lists"
4. The display name in my MSN gets updated, even though I've renamed him :/