Debian TeXlive install
Setup
The TeXlive Debian packages have been uploaded to unstable. [1]
Install
Basically, after having purged any other TeX distrib such as tetex:
apt-get remove --purge tetex-* texinfo
you just have to apt-get the packages as root:
apt-get install texlive-context
apt-get install texlive-pdfetex
apt-get install texlive-metapost
apt-get install lmodern
Fonts
It may be of interest to get fonts as well:
apt-get install texlive-fontsrecommended
apt-get install cm-super