Geoff,I did some research on this and found that a defect was logged (CSCto47758) and resolved for CCE 9.0(1) that seems to fix this flakiness.  It does not appear that it was approved for 8.5(x) though.  I tried it on 8.5 and saw all the things you ...

Geoff,On WS2008, MMC supports both 64-bit and 32-bit snap-ins.  The CCE 8.5 snap-in is, as is all of CCE code, still 32-bit.  Thus, to access the SNMP configuration snap-in, invoke MMC with the /32 parameter which will allow you to add the Cisco SNMP...