Thanks for the advice, but now I'm encountering a great dilemma. After Debra's advice I re-posted the same cry for help in /ask/ and fellows over there advise me to move it out side. Conditions in my flat are not the most suitable for plants (it's hot and dry over winter) and the best spots are already taken by other plants. At the moment I think I am going to try and keep it outside during winter, while hoping for the best. It's been looking sadder by days since I moved it inside. But maybe it's supposed to.. Anyway this is how it looks at the moment.