i can confirm the vertical scrolling issue on my compal hel80.
$ dmesg | grep input
[ 1.283156] input: Power Button (FF) as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[ 1.283201] input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input1
[ 1.283284] input: Power Button (CM) as /devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input2
[ 1.322531] input: Macintosh mouse button emulation as /devices/virtual/input/input3
[ 2.074165] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input4
[ 9.585851] input: PC Speaker as /devices/platform/pcspkr/input/input5
[ 9.926749] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/device:01/device:02/input/input6
[ 11.161156] input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input7
i can confirm the vertical scrolling issue on my compal hel80.
$ dmesg | grep input LNXSYSTM: 00/LNXPWRBN: 00/input/ input0 LNXSYSTM: 00/device: 00/PNP0C0D: 00/input/ input1 LNXSYSTM: 00/device: 00/PNP0C0C: 00/input/ input2 virtual/ input/input3 platform/ i8042/serio0/ input/input4 platform/ pcspkr/ input/input5 LNXSYSTM: 00/device: 00/PNP0A08: 00/device: 01/device: 02/input/ input6 platform/ i8042/serio1/ input/input7
[ 1.283156] input: Power Button (FF) as /devices/
[ 1.283201] input: Lid Switch as /devices/
[ 1.283284] input: Power Button (CM) as /devices/
[ 1.322531] input: Macintosh mouse button emulation as /devices/
[ 2.074165] input: AT Translated Set 2 keyboard as /devices/
[ 9.585851] input: PC Speaker as /devices/
[ 9.926749] input: Video Bus as /devices/
[ 11.161156] input: ETPS/2 Elantech Touchpad as /devices/
running Jaunty Beta AMD64