I have a generic mouse, and I wish I could click it to make it double click but nooooooo… instead if makes me autoscroll up or down on the page I’m reading. It’s annoying. I found a solution to disable it. It’s in the FireFox settings under
Tools > Options > Advanced > under General Tab > uncheck Use Autoscrolling
I found the step by step instructions including screenshots over at howtogeek.com
If anybody knows how to make the scroll wheel double click when I press it on a generic USB mouse let me know!