Trust 17088 my scroll mouse problem

SOURCE: Wheel will not do just a standard scroll

You should make sure that you have the LX7 Setpoint software installed to set the features you want. For the scroll button or button three if pressed, I have mine set to zoom (first selection). The scroll function of the wheel should be automatic. Go the mouse movement settings and set the scroll size to 6 lines. That should allow you to scroll your pages adequately. If this helps send a reply for others to view.

SOURCE: Mighty Mouse won't scroll down

I have had the same problem on occasion.  I found that if I turn the mouse over and tickle it...  It works!  Only kidding...
Turn the mouse over, push down hard so the ball is depressed, and move it vigorously in all directions.  That usually dislodges whatever is trapped inside.

SOURCE: G9 Laser Mouse Scrolling Problem

thx for helping dude, logitechexpert my ***... now check that...i was so pissed because of such stupid advice that i hit my mouse on the corner of my desk...yep i really did.  ...and then it worked! it SCROLLS!
my theory: the logitech has a quite complicated mechanical clockwork-like gear switch for their scrollwheel. they are so proud of it, that they even have pictures of it on the box when you buy a g9. well, i guess when you make things more complicated they arent that reliable anymore...like the gear switch at your bycicle which gets messed up sometimes, because its small mechanical parts just get stucked.  so my mechanical solution: turn your g9 around hold it and knock three times(not too soft: imagine the money you paid for this mouse and release your anger) just around the area where the mechanism is located...i had exactly the same problems like you and now it works perfectly! ...i guess i dont need to buy batteries.

SOURCE: Scroll Button does not work

Take the mouse off of the computer. Turn it upside down on a piece of clean printer paper, so that the scroll ball is touching the paper. Roll it around briskly on the paper. This will help clean off the scroll ball.

SOURCE: scroller goes up when scrolling down

This works for all mice.
click the scroll button and movie it up and down for a while and it will work just fine.
i had the same problem with my acer mouse but when i looked at a forum for the mac os x mouse someone said this tip and it worked