No Horizontal scrolling with trackpoint in Firefox

[ComputerMinder]

Anyone have an idea why the trackpoint scrolling with the middle button doesn't work for HORIZONTAL SCROLLING IN FIREFOX (2.0.0.12) ? Vertical scrolling works just fine. Only Hor scrolling doesn't and only in Firefox. In IE both work fine. I have googled it and even searched through the forums here, found a bunch of complaints, but no solutions that worked.

I have found some page on thinkwiki that suggested doin about:config in firefox and chaning all sorts of stuff like:
mousewheel.horizscroll.withcontrolkey.action = 3;
mousewheel.horizscroll.withcontrolkey.numlines = 1;
mousewheel.horizscroll.withcontrolkey.sysnumlines = true;

mousewheel.horizscroll.withnokey.action = 0;
mousewheel.horizscroll.withnokey.numlines = 1;
mousewheel.horizscroll.withnokey.sysnumlines = true;

mousewheel.horizscroll.withshiftkey.action = 1;
mousewheel.horizscroll.withshiftkey.numlines = 1;
mousewheel.horizscroll.withshiftkey.sysnumlines = true;


But that didn't work either... annoying bug, it's interesting, I saw people complain about it ever since 2005 while googling for it and found no solution.

[Utwig]

You need to set the center button as middle button on the Thinkpad. Launch UltraNav Wizard, and set Center button so it behaves as MiddleClick, not Scrolling or Magnifying Glass. Then it will scroll in Firefox like a normal middle mouse button would.