Do you mean "autoscrolling" -- when you "middle-click" the page with the mouse click wheel there is a circle and depending on how far and in what direction you move the mouse pointer the page will scroll? There is a checkbox to enable/disable that on the Options page.

If the problem occurs in some other way, could you describe it in more detail?

Example: When attaching a file to email I click on the scroll to move forward one page in my folder, then firefox continues to move forward through the folder while my cursor is hovered on the scroll bar. I want to stop all movement caused by hovering.

note: Chrome and Opera browsers do not do this.

Example: When attaching a file to email I click on the scroll to move forward one page in my folder, then firefox continues to move forward through the folder while my cursor is hovered on the scroll bar.

Attaching a file stored on your hard drive? This problem occurs in the file browsing dialog showing the contents of your hard drive? I don't think Firefox has any settings for that dialog, because it's part of Windows.

Sometimes there are transient glitches between Firefox and Windows. Usually those disappear after a regular shut down and restart of Windows. If this one persists after a restart, hmm. It's difficult to think of a reason that it would work differently when called from different browsers. ??

Thanks for you input.