skype, in koala

sudo vi /etc/apt/sources.list

add:

http://packages.medibuntu.org/ karmic free non-free

Koala DVD

sudo apt-get install ubuntu-restricted-extras

subfig captions are not centered with \abstract

Trial and error showed this to be due to \abstract being
used. Changing to \begin{abstract} text \end{abstract}
cleaned things up immediately.