Noobvious, thanks for the tip! And Dinesh: Repair is out of the question. Jen is really terminal, no operation could save her. This last one is only the last in a long line of difficulties.
Decision is made, I will get a "new" N900 or a Windows phone. What I like in N900 is that if I need something not available in repository ("app store"), I can write it myself, launch the normal Debian terminal, compile it and start using. On the other hand, as I have moved to Windows 8 & 8.1, now it could be the right moment to move to Windows phone as I am quite interested in learning how PC and phone could work together.