Our WCS has been deployed and running for more than a year. Recently we have added more controllers (4 X 4404) to be monitored by the WCS. The WCS is running 188.8.131.52 on RHEL 4 update 1. The WLCs are running 4.1.185. We noticed on the Network Summary page of WCS where the client graph is, the graph is showing flaps of the client count on intervals of 15-20 mins. At one point we can see the graph showing 600 clients,then the graph will dip all the way to 0 within 15 mins and it will rise again. On further investigation, all client count reports on all individual controllers (9 controllers) revealed flapping client count. We checked the network infra for problematic links but no fault was discovered at the network layer. FYI, we also have a WLA ver 184.108.40.206.