Implement an automated update mechanism
When an update is available, a one click update method should be provided which automatically verifies the file signature. In the alternative, a wizard could guide the user through the process of downloading the update and verifying the signature by invoking GPG automatically and parsing the output. The object here is to script the update procedure in the same manner as Firefox, so the novice user does not have to issue commands directly to the operating system, they only need to approve or deny the update by clicking buttons in the update dialog window.