yes i disabled them, and have rootsh installed. i was able to delete the messages from the converstations but still have the error. i am able to remove apps from app manage though.
open xterm and type sudo gainroot (press enter) then type df -h (press enter) and see what rootfs memory is at please
Should free up 9MBs or so, and let you get rid of the problem, STAY OUT OF EXTRAS-DEVEL IF YOU DON'T KNOW HOW TO FIX IT.
More tips here: http://wiki.maemo.org/Free_up_rootfs_space