All in all, Karmic Koala was a great release of the Ubuntu Linux operating system. It introduced Ubuntu Software Center, Ubuntu One, Disk Utility, better support for Intel graphics cards, as well as built-in support for the XZ compression format. Ubuntu Linux Karmic Koala Linux distribution Ubuntu Linux Karmic Koala. Hii,i know there is no need in linux for antivirus. But i wanna to install a antivirus in ubuntu 9.10 but i dont know how. Please suggest. Canonical has released Ubuntu 9.10 Linux distribution for Desktops and Netbook. It is publicly released for free download. According to the release note from Canonical, a Europe based organization which is sponsor of Ubuntu, this Linux distribution’s latest release is having below mentioned features.