Hi,

Take a look here:  http://www.qnx.com/developers/docs/7.0.0/#com.qnx.doc.neutrino.lib_ref/topic/s/shutdown_system.html 

The shutdown command on QNX is built on a reusable component called libshutdown.   libshutdown on QNX 6.6 seems to have 
the same behavior described in the 7.0 docs -- when called, it, attempts to open "shutdown_nvram.so" and pass it a 
reason string; if no such file is found, it emits the  message you're reporting.   I'm not sure why this wasn't 
documented for 6.6, though.

Disclaimer:  I'm not a QNX employee - just someone who found supplying the shutdown_nvram dll a very practical way to 
hook my own code into the shutdown sequence without running afoul of timeouts.

-Will