When I use the trackpad on my Thinkpad X220 (42984BU), it seems to result in Tab keypresses (i.e. it actually has the same effect as if I hit Tab repeatedly). The red TrackPoint (eraserhead) works fine, and clicking on the trackpad's bottom right and left buttons works fine. I suspect that this is a physical malfunction, but I may be wrong. Anyone know what the issue could be?
Side note: On top of this, I also have the common "UltraNav driver is not installed" error, but that may be a separate issue.