One of my killer apps is Easy Debian, which allows one to install just about any Linux application in a chroot environment, i.e. without messing around with Maemo and still being able to use all of the functionality of the N900. See e.g. http://talk.maemo.org/showthread.php?t=41605 I have just installed Zim under Easy Debian without any difficulty Thanks for drawing my attention to this app!