One more question, is there a luck factor at all ? If I burn 50 coins now, can someone who burnt only 1 get the PoB reward ?
Yes they could, except relative to the guy that burned 50 coins, the person that burned 1 coin would have a 50 times smaller chance of finding a block. Once a pool is made, both will get coins but the 50 coins guy would get 50 times the reward the 1 coin guy will get.
I use linux debian and I have compiled myself the wallet from source. When I receive a mined transaction it should appear in the Unconfirmed but the counter is alway 0.0.
IE: Actually I have two Unconfirmed transaction 1mined (with 372 confirm so far) and 1minted (burn with 16 confirm so far). I should see something in the unconfirmed balance isn't it ?