Al,

Good observations. Thanks for your feedback.

Malcolm


>I can't answer your question(s) but I can point out:
>
>1. There may be third-party driver software installed that controls this action rather than any "default" driver action by Windows (e.g. Logitech)
>
>2. This third-party software (and maybe the Windows driver as well) may allow the user to change the assignment for the wheel click so it doesn't behave as you describe above
>
>For example, I've got IntelliPoint installed for my MS optical mouse, and I've reassigned the wheel click to be a double-click.