Visualization and Monitoring of Network Traffic Dagstuhl Seminar will be held in Schloss Dagstuhl, from 17.05.09 to 20.05.09. 

The aim of the seminar is to bring together for the first time people from the networking community and the visualization community in order to explore common grounds in capturing and visualizing network behaviour and to exchange upcoming requirements and novel techniques. The seminar also targets network operators running large IP networks as well as companies building software products for network monitoring and visualization.

More information here