/etc/init.d/nrpe 3.2.3 uses deprecated opts, --startas, and --chuid I apologize if this is fixed in HEAD, nagios 3.3.1, but the IRC #nagios and all other nagios docs say not to use 3.3.1 as it's not stable...
Check bug 410775.
*** Bug 410775 has been marked as a duplicate of this bug. ***
Fixed in net-analyzer/nagios-nrpe-2.13. Thanks!