APM 4.2,
We have recently upgraded from VSphere 4.x (where everything was working like gravy) to ESXi 5. The VCenters and the hosts have been successfully upgraded. However, after manual SNMP config on the hosts and working with credentials, I have not been able to get the hosts to report the same level of information they were previously. See below for more information. Am I missing something, or is ESXi 5 not as supported as previous versions? Thanks!
I have the VCenter boxes added successfully and they show green and all tests pass successfully. (See below the "VC01" boxes):

However, the host ("ESX01 above) is never green or blue and remains in an "Unknown state". The credentials and SNMP (only using read only SNMP) settings both pass successfully in the ESX host node settings. I get some information back from the host (see below), but no information on the guests like I used to (multi-guest CPU and mem graphs) and I also don't receive any CPU or MEM data on the host itself.

Here is a shot of the node itself as reported by APM:
