There is an easy way to solve the problem though. The solution is a software called EasyUbuntu witch adds almost all necessary extensions to the Ubuntu. Install EasyUbuntu after a fresh Ubuntu installation and usual codecs, graphics drivers, Flash-plugin, Java etc will be installed in an easy way. EasyUbuntu also installs common software as Skype and a couple of compression utilities like 7-Zip as an example.
Full story »