texture editor + extended component selection mode don't mix

Here's a tip when working in the Texture Editor. If you like to work with extended component selection mode turned on, you should turn it off when working in the Texture Editor. When it is on, it keeps adding to the selection so that when you are manipulating sample points you may actually be manipulating many more points than you are aware. So if points on what you believe to be unselected clusters seem to be moving, check to make sure that extended component selection is turned off!