Question : Network diagram software

Does anyone know a good (preferably free) software for diagramming networks?

Answer : Network diagram software

Here are a few:

http://www.smartdraw.com/specials/network.asp?id=30748 - Free Trial

http://www.pacestar.com/lanflow/trial.htm - Free Trial

http://www.conceptdraw.com/en/products/cd5/applications_net.php - Free Trial

or Microsoft Visio - of course you have to pay for this one Microsoft isn't giving anything away free