Most UKers use MSN rather than AIM. All my friends in England use MSN. I only use AIM for my American/Canadian friends.
Final Verdict: MSN 5 is not really a substantial update. I've already mentioned how barely different it is feature wise (still no audio support... yet third party apps such as Adium and Mercury Messenger support this - MM supports webcam too), so I thought at least tech wise it'd be better. But no. It's basically the same "Internet problem" which is only valid when using the official client; use a third party client and I never get d/c. Also, it still has that password error, claiming that my password is incorrect, when it isn't. It's just a 'connection problem'.
It's kinda sad, how the company of the official client of such a popular idea, is doing so badly in this aspect. Really awful delivery, truck-loads of hype, and barely any new features, while the Windows version has really stupid features like nudges. Is Microsoft trying to win me over here?