squid -k shutdown : still squid processes

Dear squid users,

I'm fearly new to squid, but couldn't my answer in the FAQs.
(Squid Cache: Version 2.1.PATCH2, on a Sun Sparc 5 Solaris 7).

The documentation says:

squid -k kill: Sends a kill signal
squid -k interrupt: Sends an INT signal
squid -k shutdown: Send a TERM signal

All three DON'T shutdown my proxy server !!
The only way to take squid offline is by killing the "RunCache" and the
"(squid) -sY" processes by hand.

Thanks for your answers,

--
Richard van Drimmelen                       | email: rdri@nki.nl
System Management Research                  | phone: +31 20 5121899
The Netherlands Cancer Institute, Amsterdam | fax:   +31 20 5121893