Odd prob w/new wireless mouse

[Yuna_Firerose]

My new mouse, a Wenger Spyder 5 Button Wireless, arrived today and whilst I love its shape and comfort, etc, it has some strange scroll sensitivity. When I go into my folders and try to scroll down the mouse doesn't let me. Scrolls immediately back to top. Haven't noticed this in web pages, except when I encounter a drop-down menu, of which I can't select options.

 

I've gone into Control Panel and fiddled with the limited mouse options but nothing seems to help. The laptop's mousepad works fine as always, its just the mouse.

 

I'm hesitant to send it back as I bought it from Dell via $50 gift card.

 

^Looks like that, only black/silver instead of red/black.