Odd mouse button problem

Now, I have absolutely no idea how, but whenever I left click a tool in the toolbar of 6.01 it gives me the options for the other tools...



Now it should only do this when I right click! It's rather annoying...and I have no idea how to change it back. I did a little snooping in the registry but found nothing.

that should only happen with the left click if u left click and hold down on it, make sure ur mouse's left button isnt stuck or that ur not holding it to long. Other than that i dont know, it dosnt happen for me