+<!-- ~~~~~ New section ~~~~~ -->
+<sect2 renderas="sect3" id="macosxaccountdeletion">
+<title>I just upgraded to Mac OS X 10.9 (Mavericks) and now &my-app; has stopped
+ working.</title>
+ <para>
+ The upgrade process to Mac OS X Mavericks (10.9) from an earlier version of OS
+ X deletes all user accounts that are either not part of OS X itself or are
+ not interactive user accounts (ones you log in with). Since, for the sake of
+ security, &my-app; runs as a non-privileged user that is created by its
+ installer (_privoxy), it can no longer start up once that account gets deleted.
+ The solution is to perform a complete uninstall using the supplied
+ <application>uninstall.command</application> script (either back up your
+ configuration files or select to not have the uninstaller remove them when it
+ prompts you) and then reinstall &my-app; using the installer package and merge
+ in your configuration.
+ </para>
+</sect2>
+