This sort of spins off from my earlier posts in General Trek Discussion regarding the commandent of Rura Penthe. I'm sure other people have pondered this before, but here goes: If Nero and his crew were incarcerated on a prison planet for two and a half decades, how did they manage to regain the Narada? I find it unlikely that the Klingons would've just had it in orbit of the planet, where it was quite possible Nero would be able to escape and get to it. And before anyone says anything, Nero must have been locked up all those years, otherwise he would've made his presense known in a big way (and he must've got those Centauri slugs from somewhere).