Mouse is buggy.
My mouse seems to be having problems. Sometimes when I click once, something gets screwed up and the computer thinks I clicked twice. So if I clicked on something that required a double-click to open, sometimes it would open when I only clicked once. Also, if I want to drag a folder or something, the mouse gets messed up and the computer thinks I let go of the mouse button while dragging even though I didn't. I just got this mouse about 6 months ago. Not sure if this will help, but my mouse isn't cordless and it has those lens things instead of a ball. I already made sure the USB cord was connected properly and all the drivers are working properly. I'm not sure what's really going on.
Help is appreciated.