Skype for Linux has been somewhat under-developed in the past but that may be about to change as Microsoft has now released the newest revision to its application for the Linux platform.
This update drops the beta label and may result in more consistent updates. The last release was beta 2.2 which seriously lacked features, making it near enough incompatible with later versions of the application on other platforms.
The new Skype for Linux uses a new interface for viewing conversations as well as when participating in a call. Audio and video quality have been substantially improved due to a fix that Skype has made on its side of the service. The app now also features native language support for users in Norway and the Czech Republic.
While the update doesn't compare to the experience you’d get for Skype on Windows or Mac, it does improve on functionality.
Skype 4.0 for Linux is available for download now.
Source: Skype blog