Installed 8.04 last week. Previously ran 7.10 but did a clean install as I was changing a few things. I don't recall having this issue previously, now when I go to select my resolution "cloned output" is always checked. I have an ATI x1900GT with 2 dvi ports... only one is connected to a 21" lcd, nothing on the other. Any ideas why this keeps coming up and what I can do to make it stop?