Ok, so I was working in Fireworks, and I mis-pressed some keyboard shortcut. Then, there appears a "No" symbol (like No smoking, etc) indicator with letter message "Banned" on the screen, and quickly disappeared. It is the same place and style as the volume meter indicator. Looks like this: http://grab.by/77iq If anyone can let me know what I have actually "banned," I'd be very grateful. Thanks. --- btw, this is not a start issue. I just want to know what I had done.