Hack for Thinkpad Trackpoint scrolling (Windows)

The Thinkpad Trackpoint scrolling drivers make certain assumptions about Gecko's internal window structures that are no longer valid as of Gecko 1.9.2. For backwards compatibility a hack has been inserted that creates fake invisible scrollbars so that the Trackpoint drivers will continue to work. Because this hack can itself break other drivers that make other assumptions about Gecko's window structures, Gecko uses the hack only when a Trackpoint driver is detected. Gecko looks for the Trackpoint driver by checking for the existence of several registry keys that various versions of the Trackpoint driver use.

The preference ui.trackpoint_hack.enabled controls whether or not Gecko will activate the Trackpoint hack. The default value of -1 tells Gecko to try to detect the Trackpoint driver and to use the hack if one is found. A value of 0 tells Gecko to never use the hack, and a value of 1 tells Gecko to always use the hack. It is our hope that after this issue is resolved by the driver manufacturer that this hack can be removed in future versions of Gecko.

See bug 507222 for more details.

I've solved the problem! When i was reading a thread in the web i found the solution!
The new firefox listen to a different mouse input. (I'm not very sure but this's what i've understood)
So what i've done is to change in the mouse software configurations the "Use universal scrolling" to "Emulate Microsoft Office 97 scolling"