OK this may seem odd but it is something I have been dealing with for quite a while now. I have 7 ESXi 5.1 hosts and one vCenter 5.1 server. I will get host disconnects (they will reconnect on their own) at random times during the day. VMs will not be balanced across my hosts optimally when they are all online. vMotion items will fail with messages like "Another task is already in progress" when I don't have any tasks running on the VM in question. All of these issues will temp resolve themselves if I restart the management agents on my ESXi hosts. It is the strangest thing and I do not know what to do about this. I have not had much help from support to be honest and I just want to nail down what is going on.
Any ideas?