Prizm 3.1 Not polling (sort of)

We are having an issue with Prizm not polling any elements - well they are being polled as far as being online or offline (green or red) but we are not getting any data. We have not exceeded our licenses (305 of 310), we are running:
Build: 3.10.r4( 02.18.2008 14:34:11 )
Patch Version: 3.10.r4.p7 (Build 3)

We keep getting the following errors in the logs for each element (there are many more but don’t want to fill the forums):

05/11/09 09:33:40 SEVERE SYSTEM Access pppoeTimerTypeValue failed, SNMPIOException:10.45.100.106=>1.3.6.1.4.1.161.19.3.2.2.42.0, error code: 1, varbind index: -1
request varbinds: null
response varbinds: null
other message:NoSuchObject
05/11/09 09:33:40 SEVERE SYSTEM Access pppoeTimeoutValue failed, SNMPIOException:10.45.100.106=>1.3.6.1.4.1.161.19.3.2.2.43.0, error code: 1, varbind index: -1
request varbinds: null
response varbinds: null
other message:NoSuchObject
05/11/09 09:33:40 SEVERE SYSTEM Access pppoeSentCBytes failed, SNMPIOException:10.45.100.106=>1.3.6.1.4.1.161.19.3.2.2.46.0, error code: 1, varbind index: -1
request varbinds: null
response varbinds: null
other message:NoSuchObject
05/11/09 09:33:40 SEVERE SYSTEM Access pppeoReceivedCBytes failed, SNMPIOException:10.45.100.106=>1.3.6.1.4.1.161.19.3.2.2.47.0, error code: 1, varbind index: -1
request varbinds: null
response varbinds: null
other message:NoSuchObject
05/11/09 09:33:40 SEVERE SYSTEM Access pppoeSentDBytes failed, SNMPIOException:10.45.100.106=>1.3.6.1.4.1.161.19.3.2.2.48.0, error code: 1, varbind index: -1
request varbinds: null
response varbinds: null
other message:NoSuchObject
05/11/09 09:33:40 SEVERE SYSTEM Access pppoeReceivedDBytes failed, SNMPIOException:10.45.100.106=>1.3.6.1.4.1.161.19.3.2.2.49.0, error code: 1, varbind index: -1
request varbinds: null
response varbinds: null
other message:NoSuchObject
05/11/09 09:33:40 SEVERE SYSTEM Access pppoeStatus failed, SNMPIOException:10.45.100.106=>1.3.6.1.4.1.161.19.3.2.2.50.0, error code: 1, varbind index: -1
request varbinds: null
response varbinds: null
other message:NoSuchObject
05/11/09 09:33:40 SEVERE SYSTEM Access pppoeMssClampStatus failed, SNMPIOException:10.45.100.106=>1.3.6.1.4.1.161.19.3.2.2.51.0, error code: 1, varbind index: -1
request varbinds: null
response varbinds: null
other message:NoSuchObject

Any thoughts on how to resolve this would be appreciated.