KP based on 2.6.28 and this will not change until Nokia reveals the sources for all the closed-source programs like the telephone applications and the hardware drivers for example. I doubt they ever will so the only option to run other kernels is a dual boot, but than missing basic functions of the hardware. Another question: why it has to be Ubuntu? I am using easydebian since n810-times and now on the n900- at the same time with maemo OS. If you are looking for desktop-programs you find on ubuntu too use easy-debian. But now it's getting completely off-topic CU Michael