i can't stop freeradius

(i love freeradius but i don't lovefreeradius on ubuntu ...) i install freeradius on ubuntu 9.4 but i can't stop freeradius... what can i do ? my console out root@blacky:/etc/init.d# freeradius stop root@blacky:/etc/init.d# ps -aux | grep freeradius Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html root 5193 0.0 0.0 106828 2556 ? Ssl Jun19 0:00 freeradius root 16823 0.0 0.0 7524 892 pts/2 R+ 14:13 0:00 grep freeradius root@blacky:/etc/init.d# ( i use freeradius on centos everything is ok but on ubuntu everything is bad. :( ) i'm sorry for my bad english :) thank you for everything....