[CentOS] freenx

why don't you try strace? It's able to examine running applications too.
Try strace -p freenxpid -f -t -o /tmp/logfile

bye,
Ago
-- 
> this is exasperating to say the least.
>
> # ls -l /var/log/nxserver.log
> -rw-------  1 nx root 0 Jan 23 15:54 /var/log/nxserver.log
>
> since it's empty and /var/log/messages and /var/log/secure also give
> absolutely no hints
>
> Thanks
>