well without reading 306 pages of posts! (who can honestly blame me!) I'd say yeah it must be possible, however, probably a rather bad idea for two main reasons, 1. severly reduced battery life and 2. over heating. I'm sure many of you are aware of the BGA problems nvidia chips have had in laptops in recent years. I cant be 100% sure on this but i'd be surprised if i was wrong but I would assume the cpu in the n900 is connected using a BGA, these tend to fail with excessive heat because the solder fatigues and cracks. So given that i think overclocking would ultimately result it hardware failure. Just my two cents worth.