Reported by elliott94 on 2012-06-20 10:05
Currently, launchers that are downloaded using the auto updater are placed in the users temperary directory. If the installation of an update is successful, the launcher is automatically removed; however, this isn't always the case.

If an update is manually canceled by the user during the download, the file is kept in the temperary directory and not removed. If several updates are canceled using this method, they waste disk space.

I think tthe best way to handel this is to check if any updates are in the temperary directory when a new update is downloaded, and if found, remove them acordingly.