We have heard quite a lot about Klez worm lately.
One of our hosting clients even managed to run the infected file (thanks to Outlook Express!)

Well, we decided to gather info about this virus and the ways how to delete it from the PC.
If anybody is interested, you can read more about it here:

http://efficientit.com/wbboard/action.php?action=getlastmain&boardid=8&sid=9c816a830c1b341626b9826e163e790d

Hope you will watch out :)

Theres a funny varity of that going around on hotmail, it sends people emails without you knowing, one sent from me to Nokia, they said, Sorry due to security issues we cannot open attachments and I was like, WTF? Better watch out come the 6th :S