iBook G4: moused doesn't work?

[Torfinn Ingolfsen]

How do I get moused working on a iBook G4[1]?
I'm running FreeBSD 9.0-RC2:
root at kg-ibook# uname -a
FreeBSD kg-ibook.kg4.no 9.0-RC2 FreeBSD 9.0-RC2 #0: Mon Nov 14 08:04:49 UTC 2011
     marcel at xserve.lan.xcllnt.net:/usr/obj/usr/src/sys/GENERIC  powerpc

The touchpad is detected in dmesg:
usbus0: 12Mbps Full Speed USB v1.0
ums0: <vendor 0x05ac product 0x1000, class 0/0, rev 2.00/19.65, addr 2> on usbus0
ums0: 5 buttons and [XY] coordinates ID=0
ugen0.3: <Apple Computer> at usbus0
atp0: <Touchpad> on usbus0

and moused is started:
root at kg-ibook# ps ax | grep moused
 1380  ??  Is    0:00.00 /usr/sbin/moused -p /dev/ums0 -t auto -I /var/run/moused.ums0.pid
 2170   0  R+    0:00.00 grep moused

and the mouse pointer shows up on (in?) the console, but it doesn't work. :-/


References:
1) http://sites.google.com/site/tingox/ibook_g4
-- 
Torfinn