Our very own Asri al-Baker has taken the time to sit down with Malcolm Lithgow, the guy behind Dreamspring, a software house which has been in the Psion and Symbian worlds for almost as long as I have(!) - Asri questions him on the challenges and rewards of developing for Symbian and asks him to summarise a modern developer's other options (Maemo, iPhone, Android, etc.) Here's the fairly lengthy, but interesting, interview.