As I keep messing with the N900 it happens quite frequently, that the Desktops get lost - meaning some widgets and shortcuts, mysteriously disappear.

This is especially annoying after fiddlin' with some shortcut's positioning for minutes on end and then losing it.

Where is the desktop layout saved, so I could back it up and restored it? I've looked in all the obvious places in /usr/share/ but can't find anything...