Question : Bandwidth Monitoring - See who is using the most bandwidth in the company

Sup all. I use a Cisco ASA 5505  firewall. Its seems the network has been real sluggish lately. We have a laid back company and I know people will stream radio and what not. Im looking for a bandwidth monitor so I can see what people are using the most bandwidth,.

Anything free?

Answer : Bandwidth Monitoring - See who is using the most bandwidth in the company

Well, its not free but it can be fully tested (trial) for a few days.  It gives some great detail on whats going on with your network.  I simply plugged into a switch and mirrored the uplink port to a port that network probe is attached to.
http://www.objectplanet.com/probe/