Business WLAN | SNMP problem

hi,
i'm using a lot of NWA11XX-NH access point.
Now on some of these i've loaded the firmware V2.10 (previous was V2.00), since then the SNMP request not work anymore and
receive timeout on these devices where i uploaded the new firmware.
The configuration is the same on all the AP.

Any suggestion, or similar problem?

Thanks

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