Recently, I find the PageDown and PageUp keys do not work in my Firefox 3.6 (both Linux and M$ editions), I used to use them to navigate webpages. I have done Google research, but without any effect.
Did anyone encounter this kind of problem? please kindly leave a comment and show how to solve the problem, many thanks to you!
Update: The solution is pretty easy: Just hit the key F7, it should work. Sounds very simple and easy!