I've noticed odd behaviour as MEP does it's auto-backup. The mouse jumps to the centre of the screen (coincident with a couple of flashes of white; a fleeting backup message, perhaps?) and then, when I try to move the mouse back to what I was doing, it takes the Play marker with it. In doing so, it zoomed my timeline and changed the fade at the end of a clip. I have to click somewhere to release the Play marker. Annoying.
Any other takers?
PS: How do I set up a signature?