One of my user's mouse stopped zooming when the wheel is rolled.
He has an intellimouse explorer, the kind with non-tilt wheel and two thumb buttons.
I went into the driver, and picked the troubleshoot button.
It offered a list of running progs, and said to pick the one that was having issues. I picked acad, and hit ok, and it
actually fixed things!
I bet other ms drivers have this functionality too, try it if you run into this.
I normally avoid those troubleshooters, because the computers I deal with are set up all the same, so drivers are
typically in order. However, most systems here have logitech mice, so there was a difference.
This kind of fix even makes it worth it to use a driver higher in version than your mouse, it usually works.
Hope this helps some frustrated souls.
Civil Engineer and Programmer
jmaeding - at - hunsaker - dotcom