@ -21,6 +21,8 @@ The :guilabel:`Ubuntu Software` tab contains settings involving the downloading
The :guilabel:`Other software` tab allows you to add, remove or edit other software sources. Here you can manage remote repositories (PPAs) and CD-ROM repositories.To enable/disable a software source click the checkbox to the left of its name. To remove software from the list left click the :guilabel:`Remove` button.
..image:: other-software-sources.png
The :guilabel:`Updates` tab allows you set which software updates you would like to subscribe to, in this case :guilabel:`Important ecurity updates`, :guilabel:`Recommended updates`, :guilabel:`Pre-released (unstable)`, and :guilabel:`Unsupported updates`. You can also set how frequently your system will automatically check for updates to the right of :guilabel:`Check for updates` and what actions it should take, namely notify you, download (without notification), or install updates. You can also specify which releases you would like to be notified of in the :guilabel:`Show new distribution releases` drop down, Normal Releases, Long term releases or Never.
The :guilabel:`Authentication` tab manages key files which ensure your downloads are not compromised, basically ensuring you are download from a reliable source and your download has not been intercepted. The list of all keys signed on your system are listed under :guilabel:`Trusted software providers`. To remove a key you no longer want to have access to your system press the :guilabel:`Remove` button. To only allow the default keys that ship with lubuntu press the :guilabel:`Restore Defaults` button.
