One thing that really annoys me, and I hope one of you know a way to fix it, is when you switch layers, then do something, undo it, and it goes back to the old layer. For example, lets say I have three layers: skin, eyes, teeth. I do some work on skin layer. I switch to eye layer. I go to paint, but forgot I had burn selected, so I go back in the history. I select paintbrush and start painting, only to realize PS has switched the it back to the skin layer. Anyone know if there's a toggle anywhere so that the selected layer remains?