CRITICAL - Could not interpret output from ping command

[madpato]

Hello

Well i have this issue mentioned in the subject on a recently installed nagios core in a debian x64 lenny box.
Already tried the most common solution around: give executable permission to /bin/ping with:

chmod u+s /bin/ping

But still the same problem.

I did tried this in the command line also:

/bin/ping -n -U -w 30 -c 5 127.0.0.1

it does work. Now if i do:

/usr/local/nagios/libexec/check_ping -H 127.0.0.1 -w 100.0,20% -c 500.0,60% -p 5

I get the same error:

ping
CRITICAL - Could not interpret output from ping command

In my cgi.cfg file in the ping sintax section i have:

ping_syntax=/bin/ping -n -U -c 5 $HOSTADDRESS$

If you need any extra info i can provide it, i hope you can help me, thanks.

[madpato]

Guess nobody can help me with this, i will try to find a solution, if i do i will post it here.