Today is the day to reinstall my raspberry pi which acts as:
forked-daapd server for my flac collection
network bridge for my upstairs room
This particular pi has a "Segmentation Fault" when issuing certain commands like "sudo su" or "apt" commands. My guess is that the SD Card is corrupted, I know this from previous problems I had with this raspberry pi.
So I made backups of all important stuff like config files etc.. Let's see how it goes!