pauloaguia: Also, if it's not the player's turn, the time settings shouldn't be changed

Of course they should! Suppose you have 2 games running. In one it's my move, and you have 5 hours left (assume Fisher clock). The other times out at noon. Now, you want 24 hours on both your clocks, otherwise, I make a move at 1 PM, and you'll time out at 6 PM. Since you've already spend your vacation day this day, you would lose the game. That's why all clocks should get 24 hours in my scheme, not just the ones where it's your move.