SNMP Process hangs on Cisco Nexus Switch
The SNMP process will stop responding on Nexus 5010 NXOS version 5.0(3)N2(1)
It appears upgrading to latest version is supposed to fix it.
Or a workaround is to unload the BRIDGE-MIB with the following command from config mode:
no snmp-server load-mib dot1dbridgesnmp
(this will not persist after a reload.)