I've had the unfortunate luck of gaining a virus through my MSN server and it seems to be sending itself out to all my contacts in my peeps list. So if you get a message stating I'm sending you a .ZIP file containing a image (IMG25 or any other number) DO NOT ACCEPT. Destroy this file straight away if it does manage to worm into your system. I apologize if any of you have been affected before I have wrote this entry.

UPDATE:

It seems the virus is still out there causing problems for many.
If you want to steer clear of infection or if you know your system has been bugged, I suggest a clean up by using virus scan online:- [link]
or by using your virus scan software probably already on your system.
My MSN hasn't been a problem since I got it checked by using this.
I also got Activescan result notes showing the cause of the problem.

Virus:W32/IRCbot.BEP.worm

So make sure you look at the notes after scanning to make sure this is now cleared off your own system. For further cleaning,
I suggest you also delete all your cookie files saved from the web too, These can be found in C:\Documents and Settings\(your computer systems name)\Cookies.