Photoshop Quirk

Not about icons specifically, but I figured someone here is bound to have had this problem before. At least I hope so.

Okay, I don't know why it's doing this but for some reason when I click on a tool in the tool box instead of just selecting the tool it's making the menu for all the tools that live in that little space pop up as if I had clicked on the little black arrow or right clicked on it and it's making me nuts.




I have no idea why it's suddenly started doing this or how to change it.

[edit] I re-booted and it's fine now. I have NO idea what was up.