Cant scroll on Samsung Series 9 with Synaptics V8.0 Clickpad

Question

Here's the deal:
Bougth an used Samsung NP900X3A-A01PT (http://www.samsung.com/pt/consumer/monitor-peripherals-printer/notebook/notebook/NP900X3A-A01PT-spec). It worked just fine (scrolled just fine on Firefox once I installed it), but since I wanned it to be close to brand new, I did a fresh Windows Intall. With the out-of-the box Restore DVD.
Intalled all drivers, all is working well except for one thing: Using Firefox I cannot scroll up or down, left or right, or use any of the controlls related to my multitouch Synaptics Clickpad V8.0 ... In any other program it works fine: Adobe Reader, Internet Explorer, Windows Explorer, etc...
Just in Firefox it will not work. Seems as if any of the multitouch interface controlls won't work (they all work on other programs).
I checked all the Synaptics functions, all is configured well.
I tried using a USB mouse, the scroll works just fine in Firefox.
Downloaded the drivers off this model's specific Samsung Download page.
If you could help me would be greatly appreciated! It's strange because it works on all other programs (so it doen'st look like driver issue), but not in Firefox. Works fine on Firefox with a USB mouse (which would seem driver issue)... And it doesn't seem to be an issue of the pad becouse it worked before. Help me please ;)

Answer 1

UPDATE: I realized that if I insist on scrolling down uppon opening a new page I can scroll but just a little bit. Then it won't scroll anymore no mather how much I insist.
Also If I click Ctrl+Two-finger-scroll-motion when I release the Ctrl button it scrolls a little. This I can repeat. But seems as if it "confuses" the pinch to zoom and two finger scroll sometimes (when releasing the Ctrl button)