to fret-
I have heard of this before. Actually, it has happened to me. It
does talk about the security issue with that program (messenger service), but i wouldn't click on it just to be safe, as that address isn't the site the patch is at...
Windows messenger service was originally designed to "allow system administrators on client-server networks to send out brief system-wide messages to everyone connected to the network." But, the reason it looks legitimate is because people have figured out ways to use messenger service for spam and thats why you're getting that message :-/
I got rid of them by turning on my MS firewall (included w/ windows) if u dont have uit turned on here's how.
Go to start/control panel/network & internet connection/ network connections and right click on ur connection. go to 'properties' and check the first box that says "internet connection firewall" this has worked for me...
Also, theres a patch for it like fireman said called
MS03-043now, any questions?

hope this helps
