3D efekti na Ubuntu-u (uz pomoć compiz-a) izgledaju fino, ali mnogo usporavaju video playback. Ako želite da uživate u HD-u na sporijoj mašini — isključite ih.

A guide to using PDFs on GNU/Linux | Linux Journal:
Although GNU/Linux has long supported postscript format, full support for the related PDF file format has been longer in arriving. Today, however, PDF support is finally starting to equal what is available on other operating systems. Whether you are printing, editing, or viewing PDF files, you [...]