The mouse that I use for work was on the blink. It developed a clack-clack-clack on the left button, and this sound (and feel) was most disturbing. At first I thought that it was time to go mouse shopping, but I really like this particular mouse.
Today, the mouse was behaving in the same manner. So I poked and prodded, cleaned it, tried everything.
Still the same clack-clack-clack noise.
I resorted to the final straw. I disconnected the mouse and whacked it on my carpeted floor a few times.
Mouse is now fixed.
Not the most technical way of handling things, but it seems to have worked.