two finger scroll doesn't work.i

Hi spasm,

you have to perform the following steps to get the "two finger scroll" running:

(1) Make sure, beeing an administrator on your MacBook (Pro).

(2) Open the Applications/Utilities folder and execute the Terminal.app. (in German: Programme/Dienstprogramme)

(3) Type the following command into the terminal window:
+defaults write -g com.apple.trackpad.scrollBehavior 2+

(4) To proof if it worked, type the following command into the terminal window:
+defaults read -g com.apple.trackpad.scrollBehavior+
The result should be "2".

(5) Log out from the system or reboot your machine.

After this procedure the "two finger scroll" worked perfectly on my new MacBook Pro.

Fine, I followed the explaination and surprisingly it works. After the first disappointing, what a relief!
Thanks guys

I had the same annoying problem: no 2-finger scroll.
I thought tonights TrackPad firmware update would fix it. No.
So... Thank you Patrick for that simple solution.
Now how about the cursor freezing randomly... a click awakens it ... but very annoying on a nice dual graphics MacBook Pro 2.53.... maybe the firmware update fixed that... 'don't know yet...

Apple issued a Firmware update to the trackpad so get updating now.

That worked for me. Thanks!

Patrick's solution worked perfect. I was annoyed and almost to the point of doing a complete reinstall.

Thanks, Patrick. I used the Terminal command on my 15.4 MBP that I migrated from the previous generation MPB and it worked perfectly - and I was frustrated. I appreciate your insight.

Thanks a lot for the step-by-step instructions!! It worked for me as well!

Excellent instructions for the Terminal trackpad preferences fix. This fixed it and it works great!

I used Migration Assistant to move a user from a 12" 1 Ghz PowerBook G4 with 10.5.6 (using iScroll2) to a new MacBook 2 Ghz aluminum with 10.5.6. After importing, vertical two finger scrolling on the MacBook was working, but horizontal scrolling was not.

2 finger scrolling was working on the MacBook before importing the user, so Migration Assistant probably brought over a preference file from the PowerBook with the wrong setting.

Checked the MacBook's setting for read -g com.apple.trackpad.scrollBehavior setting before changing, and it was set to 1 (not 0 or 2). But after changing the number to 2 per instructions, it works great. I wonder if 0 = off, 1 = vertical only, 2 = vertical and horizontal enabled? So perhaps before changing the setting, check what it was previously, if it was 2 already, the problem is probably something else.

Also, users migrating from another computer should check to make sure that iScroll2 is removed from their new system. iScroll2 said it was disabled (not Intel compatible) in System Preferences after the migration, so then we manually removed it. According to the uninstall for iScroll2 some of the files were located in
/System/Library/Extensions/iScroll2.kext
/Library/PreferencePanes/iScroll2.prefPane
/Library/Preferences/name.razzfazz.driver.iScroll2.plist
/Library/StartupItems/iScroll2
/usr/local/bin/iScroll2Daemon
/Library/Receipts/iScroll2.pkg

Also had to unpair the Apple TV remote from the laptop.

Thanks for the great tip!