My cursor isn't working on Firefox, so I can't scroll down - I must manually hold the vertical bar to move page.
You may have switched on caret browsing.
You can press press F7 (on Mac: fn + F7) to toggle caret browsing on/off.
I've tried but not working scrolling.
I have had this nagging problem several times. Each time more frustrating than the last. PDF's. If you have a .pdf page open in Firefox (as often happens when looking at brochures and whatnot from websites) the mousepad side scroll function will not work. Plugging in an external usb device works just fine, making the situation that much more aggravating. Simply close any windows or tabs from Firefox that are displaying .pdf's, and the blood pressure "should" return to normal values. If your blood pressure doesn't return to a satisfactory value, see your family doctor. He'll probably ensure your continued trust in Firefox is still better than any experience with explor.er.
See below statement concerning .pdf's
F7 works perfectly ! Thank you, great advice !
Thank you ! F7 did the trick !