Virus for Skype users

Skype and its user are in these days under the attack of a virus of the “worm” kind called IRCBot, which damages Windows systems. The virus attempts to spread through an attachment to an email inviting Skype users to update their own VoIP programme with the attached content.

Clearly, the attachment is not un update but the virus itself. The subject of these mail is "Have you got the new Skype?"