Recently Skype has been pushing updates for all the platforms Windows, Linux, Mac to fix the message leak bug. The effected Skype clients were as follows:
- Skype 5.10 for Windows
- Skype 5.8 for Mac
- Skype 4.0 for Linux
- Skype 1.2 for Windows Phone
Although its advisable for the users to manually check for update if somehow you did not receive the update that was pushed from Skype.