We're trying to utilize VMWare View in a desktop virtualization solution and have a huge R900 Dell 4U server with 64Gig of RAM and dual quadcore 2.93Ghz processors with no luck. We tried logging 10 workstations in all at once and it cripples the server, maxes out the CPU and it doesn't really seem to come back down. We're trying to duplicate a classroom environment where an entire class would log on at once. We're reading that you should be able to run roughly 20 VMs at once on a server like this. Is there something we're doing wrong that would spike the CPU with a base XP image with nothing installed?