I'm a bit puzzled by the messages I get from the Application manager and running apt-get in the terminal. I've upgraded to devel - what should my /etc/apt/sources.list look like? Also - is it save to use apt-get next to the application manager app (installing and upgrading packages)?

- the "Catalogs" tab in the application manager doesn't match the sources.list. Is that normal?
- apt-get throws invalid signatures and hash sum mismatches