stopping auto mount hang my machine
 

when i run
/etc/rc.d/init.d/autofs stop
the machine just hange :-( moreover it sometime does not hang.
i'm using a fedora, with kernel 2.4.22-1.2115.nptl on a ibm thinkpad T40

It is really frastrating, i'm afraid to mount my laptop, since when i umount it
may hang. this is typical for windows not linux.:mad:

Any help is wellcome

Here are relavent messages from my system log:

automount[6667]: starting automounter version 3.1.7, path = /home, maptype = yp, mapname = auto.home
autofs: automount startup succeeded
automount[6575]: using kernel protocol version 3
automount[6667]: parse(sun): unknown option: -rw,intr,proto=tcp,rsize=8192,wsize=8192
automount[6533]: parse(sun): unknown option: -rw,intr,proto=tcp,rsize=8192
automount[6669]: parse(sun): unknown option: -rw,intr,proto=tcp,rsize=8192,wsize=8192
automount[6531]: parse(sun): unknown option: -rw,intr,proto=tcp,rsize=8192
automount[6551]: parse(sun): unknown option: -rw,intr,proto=tcp,rsize=8192,wsize=8192
automount[6671]: starting automounter version 3.1.7, path = /app, maptype = yp, mapname = auto.app
automount[6669]: using kernel protocol version 3
...
automount[6667]: attempting to mount entry /home/public
automount[6854]: expired /home/public
automount[6667]: attempting to mount entry /home/public
automount[6897]: expired /home/public