I'm educating myself through observation. Check out the comments.
http://github.com/codebutler/firesheep/pull/31
Just to note: I don't actually know what these guys are doing. Gotta read more code first. It would help if I were familiar with github.com already.
http://github.com/codebutler/firesheep/issuesearch?state=open&q=linux#issue/31
However, several people have gotten it working on *nix. So... win?
Ettercap: has a bit of a learning curve, but does what firesheep does and is for *nix
http://ettercap.sourceforge.net/
Note: I was playing with VirtualBox and the Sahara VM, but this is more interesting. I still read the Sahara:Eden listserv emails, and they still don't make sense, so I'm postponing that project.
Other issue:
My ubuntu kernel doesn't support more than 4gb of RAM. I have 8. Therefore, new kernel time! I'm learning how to use aptitude. ...the hard way.
http://stackoverflow.com/questions/423540/how-to-see-packages-installed-on-a-given-date-using-aptitude
http://ubuntuforums.org/showthread.php?t=243528