Some Software has vanished from my 9210 - how do I fix it?
This is most likely to be a memory card related problem. Many applications are stored on the memory card - in fact I recommend you store all you can on it. It leaves more memory for running programs.
If programs have vanished make sure the memory card is inserted and can be read.
If you have replaced it (e.g. you have bought a new card), use PC Suite for Nokia 9210 Communicator to install memory card applications from the Preinstalled in Memory Card folder of the sales package CD-ROM to the new memory card.
You can also find the installation packages for the other preinstalled applications in the Preinstalled in device folder of the sales package CD-ROM.
Reinstall all the applications that are missing if nothing else works. If something has been installed it will tell you. If you have problems you might need to uninstall and then reinstall the program.