Wheel Mouse Problem

A couple users are having trouble with the scroll button on their mice. The problem is they are MS Access database users and are always inputting various data in various fields (with drop down menu's etc) and the wheel mouse is not functioning as it should. It seems that since some important upgrades were performed this has started happening (How I really don't know! as they were only MS security patches from the Windows Update site!)

The behaviour is that the mouse wheel doesn't scroll properly, when in the database it moves from one screen or record to the next instead of up and down (as it should)

So far i've tried multiple ways to fix this ranging from re-installing mouse software and drivers to disabling the wheel mouse function all together (which still does not take effect in Access!) This is a very annoying little problem and it has me stumped :4-dontkno

Anyone seen anything like this before and can put me out of my misery? :laugh: