Receiving CMAN cmd_get_node error message in corosync.log on RHEL 5

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Issue

unknown error messages in corosync.log
The corosync.log file shows numerous errors: "cmd_get_node failed: id=0, name='x'", where x is an unprintable character. These occur several times a minute forever.

Environment

Red Hat Enterprise Linux (RHEL) 5 (with the High Availability Add on)

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