If you're a Skype user, you're going to want to grab this update. The update was released following Secunia's "highly critical" advisory that detailed a flaw that leaves users wide open to attack.

"That flaw, which is similar to a bug Skype fixed last year, affects only Skype for Windows. An attacker could exploit the flaw by crafting a special link and enticing a user to click on it. The flaw could also be exploited when importing user information from a malformed electronic business card, or VCARD, Skype said in an advisory."