You can set LNB OFF with all SS2 driver versions, the problem is that DVB Dream don't use LNBPowerOff option for now, but I'm sure that it will use it in the future.
I hope it will.
Besides the Skystar 2 DVB card, I have a satellite TV set-top-box in the living room.
Sometimes I want to watch TV in the living room (leaving my computer on, in my bedroom), but I can only watch some channels. For example, if the last TV channel I watched on DVB Dream, has Horizontal polarisation, I can only watch TV channels (in the same satellite) with Vertical polarisation on my set-top-box, and vice-versa (polarisation wise). This happens because DVB Dream doesn't turn the LNB power off on exit.
So, a "Power off LNB on exit" option would be apreciated.
[EDIT] I'll post this in the Features Request section, since there is no topic there about this subject.