We have 3 citrix servers all load balanced and have been working fine for the last 3 years. However today the load balancing seemed to go crazy, 50 on one server, 30 on another and none on one of the servers. When I checked the Load balancer on the server (CPU utilization) it said that the server with no one on was using 100% CPU, even though Task Manger said that CPU usage was 0%. I changed the load evaluator to monitor memory instead, and instantly the same server was reporting 100% memory using, again Task Manager showed a different story. I got round it by using the "user load" evaluator and the server is now happily allowing connections again. any of you Citrix bods know why this is happening?