According to Skype, the problem only occurs “when a user’s Skype client crashes during a Skype IM session, which may in some cases result in the last IM entered or sent prior to the crash being delivered to a different IM contact after the Skype client is rebooted or logged in as a new user.”
Skype for Linux 4.0
The issue was first reported last week by a Skype user on Skype’s Support Network forums. According to that user, also known as “SunnyLady78,” the Skype client began acting strange after she updated her Skype in June. In a thread titled “Skype text messages I received have gone to another contact,” SunnyLady78 describes the problem:
Skype says it is working on a fix. The company isn’t sure how many users are affected, but it estimates that the number is “very small given the very specific circumstances under which the error occurs.” Still, Skype is currently working on fixes for the versions of Skype that are affected, which include Skype 5.9 and 5.10 for Windows, Skype 5.8 for Mac, Skype 4.0 for Linux, Skype 1.2 for Windows Phone, Skype 2.8 for Android, and Skype 4.0 for iOS.