Just collected my N40L today..
now  I have to decide what to go for in terms of OS, my few choices are :

1. Freenas or OpenMediaVault, and one that has to have bittorrent(utorrent) server for seeding purpose..  This is easy opt as I can boot the OS thru the USB in the MOBO..

2.  Windows Home server 2011 - No idea where I can get a copy as I read it only comes as OEM copy (ie. bundled with Acer Revocenter)..

3.  Windows server 2008 R2.  I have access to this.  This will take up a HDD  which I don't quite prefer, and i wonder running this R2 would consume more power than say Freenas since it may have many services that run on the background which I don't really need..

Any inputs and comments are most appreciated!