FF4 does not respond to my (Dell) touchpad's scrolling feature. BEFORE you get cranky, please know that I tried all the troubleshooting options available to me as of now (i.e. tried updating Dell Touchpad Driver, then tried changing the touchpad driver to the most recent available on Synaptic's website, also I changed the about:config setting as stated in FF help) NOTHING WORKED. It did seem to work as FF started, but soon after, the feature stops working.