I was able repartition my device successfully using "Solution #6: Custom repartitioning from a linux PC" in the http://wiki.maemo.org/Repartitioning_the_flash and my Ubuntu box. I now have 1 gb swap, 10 gb home, and the remainder 20ish gb MyDocs. gnu parted and my n900 fought for a bit when I tried to unmout some of the partitions to allow resizing, however i found that disabling and re-enabling the USB support on the n900 (u key) sever times was able over come this. after gnu parted was able to modify the disk everything went smoothly...well until i disabled r&d mode and tried to reboot. it would only boot to the four dots on the screen then turn off again. a quick reflash of the vanilla was able to fixed this. in conclusion, if you don't mind doing a reflash on your device, this is a relatively painless and easy way to resize your n900's internal flash partitions. hope this helps. if anyone had question, i would be happy to try to provide any assistance possible.