Bug#444183: works for me...

[Soeren Sonnenburg <bugreports@nn7.de>]

Package: xserver-xorg-input-mouse
Followup-For: Bug #444183


I wonder why it does not work for you... however it works here on this
mbp1,1 ...

-- Package-specific info:
Contents of /var/lib/x11/X.roster:
xserver-xorg

/etc/X11/X target unchanged from checksum in /var/lib/x11/X.md5sum.

X server symlink status:
lrwxrwxrwx 1 root root 13 2007-01-10 17:20 /etc/X11/X -> /usr/bin/Xorg
-rwxr-xr-x 1 root root 1669528 2007-09-16 20:56 /usr/bin/Xorg

Contents of /var/lib/x11/xorg.conf.roster:
xserver-xorg

VGA-compatible devices on PCI bus:
01:00.0 VGA compatible controller: ATI Technologies Inc M56P [Radeon Mobility X1600]

/var/lib/x11/xorg.conf.md5sum does not exist.

Xorg X server configuration file status:
-rw-rw-rw- 1 root root 5296 2007-09-28 16:07 /etc/X11/xorg.conf

Contents of /etc/X11/xorg.conf:

Section "InputDevice"
	Identifier  "Internal Touchpad"
	Driver      "synaptics"
	Option	    "SendCoreEvents" "true"
	Option	    "Device" "/dev/input/by-id/usb-Apple_Computer_Apple_Internal_Keyboard_._Trackpad-mouse"
	Option	    "Protocol" "auto-dev"
	Option	    "MinSpeed" "0.50"
	Option	    "MaxSpeed" "4"
	Option	    "AccelFactor" "0.09"
    # Tap options.
	Option	    "FastTaps" "off"    # Respond faster to single-taps, and slower to double-taps
	Option	    "TapButton1" "0"     # Mouse button for 1-finger tap
	Option	    "TapButton2" "0"     # Mouse button for 2-finger tap
	Option	    "TapButton3" "0"     # Mouse button for 3-finger tap
	Option	    "CoastingSpeed" "0"     # Scrolling *after* the finger is released
	Option	    "LockedDrags" "off"    # On means dragging is terminated with a tap
	Option	    "VertEdgeScroll" "off"
	Option	    "HorizEdgeScroll" "off"
	Option	    "VertTwoFingerScroll" "true"
	Option	    "HorizTwoFingerScroll" "false"
	Option	    "LTCornerButton" "0"
	Option	    "RTCornerButton" "0"
	Option	    "LBCornerButton" "0"
	Option	    "RBCornerButton" "0"
EndSection

-- System Information:
Debian Release: lenny/sid
  APT prefers stable
  APT policy: (700, 'stable'), (650, 'testing'), (600, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.23-rc9-sonne (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages xserver-xorg-input-mouse depends on:
ii  libc6                         2.6.1-5    GNU C Library: Shared libraries
hi  xserver-xorg-core             2:1.4-2    X.Org X server -- core server

xserver-xorg-input-mouse recommends no packages.

-- no debconf information