I'm putting together a general lifescience based cluster (software ranging from docking apps. to blast). Its going to consist of approximately 100 nodes, including 2 head nodes. All nodes will be connected through GIGE, and we will not be using high speed interconnects. In the past I've used Cisco switches (4000 and 6000 series), stable, reliable and costly. Does anyone have any recommendations? I've had mixed reviews about Extreme, so I'd be interested in Foundy, Procurve or any systems people may have had success with. Cheers, Steve