Hey there... we are having some issues with a couple of our vCenters when in linked mode. The seem to get disjoined or partially joined for lack of a better term from vCO's perspective. Some items seem to return correct values and others you will get objects returned but the properties and methods always return the values are null. Generally restarting vCO seems to clear the issue for a time. Sometimes it seems like the vCenter services need to be restarted as well.
I am wondering if anyone else has seen similar behavior? The problem seems to go away when linked mode is disabled.