Just popped over to Omnicron Theta and mert some bounty hunter ships with class 10 shields.........managed to take out one fairly quickly, but the rest are immortal! Everytime I knock a shield down by 20% (only ever got 50% off one!), the ship zooms out of my view and his shields go back to 100%.....been doing this with one ship for nearly an hour now, so it's blatantly obvious he's either cheating by having infinite shield regeneration things or self repairing shields.