I appreciate the reply. This is was I was looking for I think. Unfortunately, it does not stop the licensing alerts. I have 2 dual CPU physical servers (a Dell T610 and a Dell T620) licensed with vsphere essentials 5.1 running 1 instance of vcenter. The licensing is ok, perhaps using 20GB RAM per server out of 32GB Physical in each server. The servers are both running ESXi 5.1 U1 which is build 1065491. In the event log for the vCenter object in my inventory, it complains with this:
vcenter (vCenter) status changed from green to red
info 5/23/2013 6:11:41 PM Health Service
License Services status changed from green to red
info 5/23/2013 6:11:41 PM Health Service
Then for no reason whatsoever approximately 10 minutes later:
vcenter (vCenter) status changed from red to green
info 5/23/2013 6:21:43 PM Health Service
License Services status changed from red to green
info 5/23/2013 6:21:43 PM Health Service
Neither server has the Dell customized ISO of vmware esxi 5.1U1 installed on it, and I am wondering if this has anything to do with it?