Easy install, at least on Debian and Ubuntu. Had to manually add an Alias + <Directory /> entry in apache conf to be able to browse the graphs.
Wouldn't install. I tried to start the application (bandwidthd.exe) but I got a message stating that wpcap.dll was missing and the application would not start.
If Abador had spent a little longer and actually read the instructions he would have seen you need to install winpcap - the readme links to an external site however it is an old link - recommend a google search and the latest version is free to download.