I have a problem reading pdf documents on my Vista. This is because in Acrobat when I scroll vertically using mouse wheel, the number of lines which are scrolled is.. around 1/3 lines (one third). So to go down one line I have to scroll mouse wheel 2 or 3 times.
I have this problem only in Acrobat. E.g., internet browsers and text editors behave correctly. In Control Panel the mouse setting for vertical scrolling is 3 lines.
How can I set the mouse scrolling to 3 lines at a time?