SNMP partial result, no graphs charted

[fristi]

I am getting the following in the logs :

10/09/2008 10:05:33 AM - CMDPHP: Poller[0] Host[25] DS[85] WARNING: Result from SNMP not valid. Partial Result:
10/09/2008 10:05:29 AM - CMDPHP: Poller[0] Host[25] DS[81] WARNING: Result from SNMP not valid. Partial Result:
10/09/2008 10:05:24 AM - CMDPHP: Poller[0] Host[25] DS[86] WARNING: Result from SNMP not valid. Partial Result:
10/09/2008 10:05:20 AM - CMDPHP: Poller[0] Host[25] DS[86] WARNING: Result from SNMP not valid. Partial Result:

No graph is charted, but when I do an snmpwalk everything works fine;
snmpwalk -v 1 -c xxxxxxx 10.2.23.254:260 .1.3.6.1.4.1.2620.1.1.4.0

What could be the problem ?

[gandalf]

Please follow hints at 2nd link of my sig to get a more precise error message. Post it here
Reinhard

[fristi]

Thanx Gandalf for the great read !! The answer was right there !!