dapper udev not working on ACTION remove

[golfer]

I'm running dapper and trying to use udev (v 079-0ubuntu10) to start
and stop my usb modem, when it is plugged and unplugged.

I have /etc/udev/rules.d/010_slmodem.rules:

SYSFS{idProduct}=="7554", SYSFS{idVendor}=="0483", ACTION=="add",
PROGRAM="/etc/init.d/sl-modem-daemon start"
SYSFS{idProduct}=="7554", SYSFS{idVendor}=="0483", ACTION=="remove",
PROGRAM="/etc/init.d/sl-modem-daemon stop"

In /etc/init.d/sl-modem-daemon is a line to log whenever it's called
(see the script at the end), so I can try to debug it.  It executes
fine when I plug the modem in, but when I unplug it, the script never
gets called.  I know this because the logger entry is not made when
the modem is unplugged.  So, it's not a script problem, it's just not
being called by udev.

The remove action of the script actually works fine when executed
manually (sudo /etc/init.d/sl-modem-daemon stop) after unplugging the
modem.

I used udevmonitor to verify that the udev events of add and remove
are being recognized by udev, so it makes me think something's wrong
with the ACTION=="remove" in my script.

Any ideas on how to fix this or troubleshoot it further?

regards,

golfbuf

Below is the /etc/init.d/sl-modem-daemon:

#!/bin/sh
#

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

logger sl-modem-daemon executed at $(date)

DAEMON=/usr/sbin/slmodemd
NAME=slmodemd
PIDFILE=/var/run/$NAME.pid
DESC="SmartLink modem daemon"
modprobe="$(cat /proc/sys/kernel/modprobe 2>/dev/null || echo modprobe)"

test -x $DAEMON || exit 0

config() {

     if grep -q 'slusb\..*o' /lib/modules/`uname -r`/modules.dep ; then
      $modprobe slusb
      SLMODEMD_DEVICE=slusb0
        if ! [ -e /dev/slusb0 ]; then
          mknod /dev/slusb0 c 243 0
        fi
      OPTS="-c USA /dev/$SLMODEMD_DEVICE"
     fi
}

start() {

    config

    echo -n "Starting SmartLink Modem driver for: $SLMODEMD_DEVICE"
    start-stop-daemon --start --pidfile $PIDFILE --exec $DAEMON
--make-pidfile --background --quiet -- $OPTS
    RETVAL=$?
    if [ "$RETVAL" = 0 ] ; then
        echo "."
#        echo "Creating /dev/modem symlink, pointing to: /dev/ttySL0."
#        ln -sf ttySL0 /dev/modem
    fi
}

stop() {
    echo -n "Shutting down SmartLink Modem driver normally"
    RETVAL=0
    if [ "`pidof $NAME`" ] ; then
        if start-stop-daemon --stop --quiet --pidfile $PIDFILE --exec
$DAEMON --retry 1 ; then
            echo .
        else
            echo " probably failed."
            echo "Trying it the hard way (send SIGKILL all $NAME processes): "
            killall -KILL $NAME || RETVAL=1
        fi
    else
        echo " ... no $NAME daemon running."
    fi
    if [ "$RETVAL" = 0 ] ; then
     rm -f "$PIDFILE"
#     rm -f /dev/modem
     rm -f /dev/slusb0
     echo -n "Unloading modem driver from kernel ... "
     msg="none found."
        if grep -l -q slusb /proc/modules ; then
            $modprobe -r slusb 2>/dev/null && msg="slusb." || msg="failed."
        fi
     echo $msg
    fi
}

status() {
    echo -n "Status of $DESC: "
    if [ ! -r "$PIDFILE" ]; then
        echo "$NAME is not running."
        exit 3
    fi
    if read pid < "$PIDFILE" && ps -p "$pid" > /dev/null 2>&1; then
        echo "$NAME is running."
        exit 0
    else
        echo "$NAME is not running but $PIDFILE exists."
        exit 1
    fi
}

# See how we were called.
case "$1" in

    start)
    start
    ;;

    stop)
    stop
    ;;

    restart|reload|force-reload)
    stop
    start
    ;;

    status)
    status
    ;;

    *)
    echo "Usage: /etc/init.d/$NAME {start|stop|restart|status}"
    exit 1
esac