Something which I noticed recently is that on the rare occasions where the Debian tor package gets updated it's potentially possible to lose the hidden service settings within your torrc configuration file if you make the wrong choice and say yes to use the maintainer's version of that file. Especially if you were running the "onion only" version of Freedombone this could be pretty bad. You wouldn't lose the keys, but it would still be very inconvenient and stop you from accessing apps.
Fortunately, there's a solution to this. The torrc file can define an include path where secondary configurations can be loaded. So this is now what happens in the current version of Freedombone. The configuration automatically gets migrated to use an include path to the settings. So no matter what happens when the tor package gets updated you shouldn't lose your settings or access to your apps via onion addresses.