The scroll feature on my touch pad does not work with 4.0. Works in all other apps including 3.6. What hapened???

Question

I can not scroll through web pages with the scroll feature on my touch pad. It worked in 3.6 and all other programs that I use. I have tried 4.0 twice with the same results, I've restarted, rebooted etc.
This should not be application dependant but a system function.
Now I will either roll back to 3.6 where I have troubles with some secure sites or just dump the whole thing and try Chrome.

Answer 1

I have discovered the solution and it involves an issue I suspected. After the restore of my old Time Machine Lion files to my new MBP running ML, the restore restored my computer back to Lion. After an install of ML, my computer worked perfectly except the fancy Scroll and zoom featured we all love from the trackpad. Ha already installed ML on other partitions and the trackpad worked perfectly on them.  Even the guest login's trackpad worked perfectly but not the main admin account.
First thought was to create a new admin account and copy everything from the old admin to the new admin and then delete the old admin account. Hated the idea because all files had to be copied rather than moved.
So what was left to do. I had thought of deleting all the apple preferences from the library and replace them with the contents of the library on another partition in ML. First I deleted old preferences many of which were old Lion preferences. That didn't solve the issue.
I forgot that Lion and ML HIDE the user library so I was working on the wrong library. Discovered the Terminal command "chflags nohidden ~/Library" and I chose to reveal the user library on a ML partition.
Solution:
I booted into another ML partition. I guess that I could have booted into the new admin user account and changed the permissions  to access the old admin users Library But I chose to boot
from another ML partition: copy ALL the com.apple. XXXXX.plist files and the folder  BY Host. It has special hidden files. Other  way is to copy the Preferences folder we'll say into the Desktop.
I then proceeded to delete ALL the com.apple…….plist files and the Host folder into the trash. Then I copied all the apple.com…plist files and the Host folder and then rebooted. And now my wonderful Trackpad works as mountain Lion intended it to work.
I'm leaving this solution because there's someone else in the MacWorld with the same issue.
Ted