Two very handy scripts for your Debian boxes:
- apt-listchanges shows you the changelog of packages you're about to install or upgrade. This allows you to abort the installation if you don't like some of the changes.
- apt-listbugs shows you a list of open bugs against the package(s) you're about to install. It does this by querying the Debian bug tracking system at runtime and displaying the results. You may abort the installation / upgrade if there's a grave bug which would break your system.
Both tools are very useful and can save your ass. Use them.