Hi all,
I've done a bit of googling around on getting the Fn keys working in Linux on the N140.
I found this page regarding the N140 on Arch Linux which has some useful information regarding the Fn keys:
http://wiki.archlinux.org/index.php/Sam ... 40#Fn_KeysIt seems like the Fn keys can be made to work by either patching the kernel to enable things the same way as for the NC10 on kernels <= 2.6.31 or on >= 2.6.32 they can be made to work with some config tweaks rather than kernel patches.
Karmic is currently on 2.6.31 so I think I'll wait until it moves to 2.6.32 before trying this out further.
Matt