This morning multiple Skype users have reported that their accounts have been stolen through a simple password reset request. The vulnerability in Skype allows attackers to hijack any account if they know just the email address. But Skype had already fixed the issue and has informed affected users.
Read more here – http://heartbeat.skype.com/2012/11/security_issue.html
And here – http://www.reddit.com/r/netsec/comments/13664q/skype_vulnerability_allowing_hijacking_of_any