Before 4.1.2, I was able to switch between home screens by just flicking my finger across the screen, even from the opposite side (when I'm holding it and navigating one handed, with my hand on one side, going back and forth).
Now, I seem to be having no problem one direction (usually towards my hand), but the other direction it will often bounce back and not shift. I can push it halfway to the next screen and have it bounce back, so I often have to use my other hand to switch screens.
Wow, that sounds lazy of me...but, still, it is aggravating, and I've not been able to find a setting to change this yet. Anyone else have this problem? Is there an easy fix?