A:
The only thing I can think of is that you are inadvertently right clicking on the mouse, that is the only think that I can think of. The other thing is your "double-click" speed may be set too fast and you don't even know you're right clicking causing the boxes to pop up. If the latter is the case, go to Control Panel, Mouse (in Devices and Printers), Buttons, Double-Click Speed, slide the arrow from Fast to about 1/4 of the way from Slow, click on Apply, then Okay. These are my best guesses.