USB mouse does not cancel a screensaver in X

[Alexander Pohoyda]

Hi all,

Relevant configuration is:
moused -p /dev/psm0 -t auto
/dev/mouse -> /dev/sysmouse

>From /etc/X11/XF86Config:
Section "InputDevice"
    Identifier  "Mouse1"
    Driver      "mouse"
    Option      "Protocol"     "auto
    Option      "Device"       "/dev/mouse"
    Option      "Buttons"      "5"
    Option      "ZAxisMapping" "4 5"
EndSection

Section "ServerLayout"
    Identifier  "Simple Layout"
    Screen "Screen 1"
    InputDevice "Mouse1" "CorePointer"
    InputDevice "Keyboard1" "CoreKeyboard"
EndSection

Both a notebook stick and the USB mouse work at the same time.
xautolock+xlock used as a screensaver.

Moving a stick or pressing a keyboard button cancels the screensaver,
but moving a USB mouse has no effect.
Is this a bug/feature/misconfiguration of my system?

It's on FreeBSD 4.8-STABLE.

-- 
Alexander Pohoyda
<alexander.pohoyda at gmx.net>