Opie 0.8.4 image includes bluetooth support , while it is not in the simpad and can only be added via a pcmcia bluetooth card, or a mod (see mods on the lest). I decided to remove bluetooth programs to make room: see all bluetooth packages:
ipkg list_installed |grep blue
now remove them like this:
ipkg -recursive remove bluez-utils-nodbus
reset to free the jffs2 filesystem to take effect