Luciano Bello got the first nepenthes debian packages on the road.
Currently they are not avalible in apt, no offical packages, but if you run debian and don't want to spend your time compiling the source, you may want to check them out. The packages contain the log path patch and and the xor & bindshell patch so you run latest software without fiddling on your own. You always can find differents (and latest) versions here.

http://www.lucianobello.com.ar/nepenthes/

Install is easy, download the .deb package of your choice

dpkg -i nepenthes-<version>.deb

will install the daemon, the config files, create the directories and run nepenthes via init script on each startup.

man nepenthes

will provide additional information.

In order to provide better readable analysis we rewrapped the help section, and split it up creating a new section for known Shellcodes. We reformatted quite all analysis results to improve readbility. Some shellcodes are new, some just got a major facelifting commenting more of the shellcodes itself.
If you want to help us on reversing unknown shellcodes get the dump, and post your results to nepenthes-devel.