I have the 3810T too and I can report similar numbers. But still, I get more life when I boot into Windows. Moreover, suspend & hibernate just don't work & the laptop fan always stays on.
It could be a buggy BIOS for all I know but we could still do better. Thus, an OEM option where _everything works_ would definitely be nice.
I do have the v1.28 BIOS. And I think I did try that and all the other options I possibly could when I first got this laptop. I've just settled for the loud fan. Anyway, I'm going to upgrade to the new release and see what that brings!
It could be a buggy BIOS for all I know but we could still do better. Thus, an OEM option where _everything works_ would definitely be nice.