I got this in my mail just now.

Mail server report.

Our firewall determined the e-mails containing worm copies are being sent from your computer.

Nowadays it happens from many computers, because this is a new virus type (Network Worms).

Using the new bug in the Windows, these viruses infect the computer unnoticeably.

After the penetrating into the computer the virus harvests all the e-mail addresses and sends the copies of itself to these e-mail addresses

Please install updates for worm elimination and your computer restoring.

Best regards,

Customers support service

Along with the mail was a file attachment named Update-KB3794-x86.exe. After such a helpful email, I guess I should immediately execute and install the update immediately!!

Oh.. but I can't run the EXE file, Outlook has blocked my access to it!

Hopefully this means that there'll be less people who are infected by this virus.