Hi
The application know as "ntop" was recently recommended to me and is a very nice tool for those looking at network usage. It was easy to install and configure on my Debian Sarge machine and produces great output viewable from most any browser on port 3000 (default).

Enjoy!
Ross
aka betsuin

also draws a really cool
also draws a really cool network map, would post a screenshot but ntop doesn't want to load on our home machine.