When I was installing vSphere 4.1 ESXi I ran into a problem. I received the following error when I added the ESXi host to my cluster:
Call “Datacenter.QueryConnectionInfo” for object “yellow bricks” on vCenter Server “W2K8-001″ failed.
Although the error didn’t make much sense I had the feeling it had something to do with name resolution(This KB article gave a hint I guess). After I added my dns suffix on my NIC it worked. Problem solved.