MSN Messenger seems to be infected with a trojan that is infecting machines very fast.
If you get a link in MSN messenger don't click it unless you are positive the person on the other end meant to send it to you. Ask them.
I have written about the insecurity of IM in the past as a potential vehicle for maliciousness...and now it is coming to pass.
We need more security on the Internet - fast. And more government and crime fighting organizations looking into the depths of Internet traffic and trends...that is where the next battlefield lies.
If the other guys have access to your bank accounts and know your every move - how can you possibly win a battle? And if they can send a virus that spreads so fast it takes down the entire infrastructure we rely on - for just about everything...
Think about it.