KDE 4.7.3 available to update on Kubuntu 11.10 Oneiric Ocelot and ubuntu 12.04 precise pangolin using PPA. KDE 4.7.3 update brings more stability, performance improvements, many KDE applications update, and various bug fixes.
Check KDE 4.7.3 updated packages for KDE platform, plasma workspaces and applications Here.
[How To]: Update KDE Platform, Workspaces And Applications To 4.7.3 On Ubuntu/Kubuntu 11.10 Oneiric Ocelot Using PPA
For Kubuntu 11.10 Oneiric Ocelot you can update it directly from official repository to KDE 4.7.3. Also if you already have KDE desktop environment on other Ubuntu 11.10 flavors/based on it you can update it as well using this repository.
Run Terminal, then type.
sudo apt-get update
sudo apt-get upgrade
That’s it for now.