STR: 1. Run Firefox Nightly. 2. Be away from the computer for two or more days, leaving Nightly running. 3. When returning to the computer, press "Apply Update" on the Nightly update dialog that greets you. Expected results: Nightly is updated to the latest nightly build. Actual results: Nightly is updated to the nightly build that was the latest at the time the dialog appeared. After this update is installed, the latest nightly is then downloaded and I'm prompted to update again. I should not have to download and apply two updates.