I'm too have touchpad on my Acer Aspire One. I configure its right now and this not finished yet. Single tap already works, but scroll is not.

You need

tazpkg get-install xorg-xf86-input-synaptics

and then manually change your /etc/X11/xorg.conf.
I expose, this helps:
http://wiki.archlinux.org/index.php/Touchpad_Synaptics

I see this error when slitaz is booting up:

psmouse.c: Failed to reset mouse on isa0060/serio1

Yes! I did it! :D
Quick & dirty solution:

tazpkg get-install xorg-xf86-input-synaptics
tazpkg get-install xorg-xf86-input-evdev

Correct the xorg.conf:

Section "ServerLayout"
...
	InputDevice		"Synaptics Touchpad" "SendCoreEvents"
EndSection

...

Section "Module"
...
	Load		"synaptics"
EndSection

...

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"		"true"
	Option		"Device"				"/dev/input/mouse1"
	Option		"Protocol"				"auto-dev"
	Option		"LeftEdge"				"130"
	Option		"RightEdge"				"840"
	Option		"TopEdge"				"130"
	Option		"BottomEdge"			"640"
	Option		"FingerLow"				"7"
	Option		"FingerHigh"			"8"
	Option		"MaxTapTime"			"180"
	Option		"MaxTapMove"			"110"
	Option		"EmulateMidButtonTime"	"75"
	Option		"VertScrollDelta"		"20"
	Option		"HorizScrollDelta"		"20"
	Option		"MinSpeed"				"0.25"
	Option		"MaxSpeed"				"0.50"
	Option		"AccelFactor"			"0.010"
	Option		"EdgeMotionMinSpeed"	"200"
	Option		"EdgeMotionMaxSpeed"	"200"
	Option		"UpDownScrolling"		"1"
	Option		"CircularScrolling"		"1"
	Option		"CircScrollDelta"		"0.1"
	Option		"CircScrollTrigger"		"2"
	Option		"SHMConfig"				"on"
	Option		"Emulate3Buttons"		"on"
	Option		"TapButton1"			"1"
EndSection

Create /etc/hal/fdi/policy/11-x11-synaptics.fdi:

<?xml version="1.0" encoding="UTF-8"?>
<deviceinfo version="0.2">
	<device>
		<match key="info.product" contains="Synaptics TouchPad">
			<merge key="input.x11_driver" type="string">synaptics</merge>
			<merge key="input.x11_options.AlwaysCore" type="string">true</merge>
			<merge key="input.x11_options.VertEdgeScroll" type="string">true</merge>
			<merge key="input.x11_options.HorizEdgeScroll" type="string">true</merge>
			<merge key="input.x11_options.TapButton1" type="string">1</merge>
			<merge key="input.x11_options.TapButton2" type="string">2</merge>
			<merge key="input.x11_options.TapButton3" type="string">3</merge>
			<merge key="input.x11_options.protocol" type="string">event</merge>
			<merge key="input.x11_options.touchpadoff" type="string">0</merge>
			<merge key="input.x11_options.shmconfig" type="string">on</merge>
		</match>
	</device>
</deviceinfo>

Restart hal daemon:

/etc/init.d/hald restart

Restart X.

Thats all, it's work!

But it is a really quick & dirty because I don't know, why it work :)
Maybe because of evdev module, maybe — of fdi, maybe — of both of them. And I don't adjust the touchpad yet.

All this I do tomorrow. Wait for my new article in blogspot soon (execuse, in Russian :). Of course, I will post a couple of words to this thread too.

There is a strange behavior. I have always connected my USB Genius mouse. To get touchpad work I want to unplug mouse, leave X session and log in again.
Swapping touchpad to CorePointer in xorg.conf (as below) don't helps :(

Section "ServerLayout"
	Identifier	"X.org Configured"
	Screen		0 "Screen0" 0 0
	InputDevice	"Synaptics Touchpad" "CorePointer"
	InputDevice	"Mouse0" "SendCoreEvents"
	InputDevice	"Keyboard0" "CoreKeyboard"
EndSection

There is no need big section "Input Device" in xorg.conf, because it's don't work, and there's no need of /etc/hal/fdi/policy/11-x11-synaptics.fdi — this don't work too.

So, there's new, short receipe to get touchpad work:

tazpkg get-install xorg-xf86-input-synaptics
tazpkg get-install xorg-xf86-input-evdev

xorg.conf:

Section "ServerLayout"
...
	InputDevice		"Synaptics Touchpad" "SendCoreEvents"
EndSection
...
Section "Module"
...
	Load		"synaptics"
EndSection
...
Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"		"true"
	Option		"Device"				"/dev/input/mouse1"
	Option		"Protocol"				"auto-dev"
	Option		"SHMConfig"				"on"
EndSection

Configuring only via synclient.
To get list of current settings, type

synclient -l

To set "CircularScrolling", type

synclient CircularScrolling=1 CircScrollTrigger=1

And etc. Changes applies immediately.

There is funny story which has occured to me yesterday.

During my experiments with touchpad I somehow have not noticed, that it has not to work. In logs - no errors, all works properly. But the cursor does not move and touchpad's buttons do not work.
Both in SliTaz and in WinXP (preinstalled) the system writes, that the device works properly.

I have spent about one day for experiments and searches in Google to force touchpad to work, but could not make it. I even was delete touchpad in Win, rebooted, then system automatically find new device and so on, all fine, but touchpad still not work...

The decision has appeared very simple! It appears, I have pressed Fn+F7 which on hard-level switches on and off touchpad. Repeated pressing has solved a problem :)

thank Lexeii! I try it and it works in Slitaz-cooking201011.

First,run bellow commands.

tazpkg get-install xorg-xf86-input-synaptics
tazpkg get-install xorg-xf86-input-evdev

Second, put bellow code into /etc/X11/xorg.conf

Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Synaptics Touchpad" "SendCoreEvents"
EndSection

Section "Module"
Load "synaptics"
EndSection

Section "InputDevice"
Identifier "Synaptics Touchpad"
Driver "synaptics"
Option "SendCoreEvents" "true"
Option "Device" "/dev/input/mouse1"
Option "Protocol" "auto-dev"
Option "SHMConfig" "on"
Option "TapButton1" "1"
EndSection


After all above, logout then login again. it works!