Sometimes the auto override systems can get you in more trouble than you were already in. A friend of mine that flies them always says. "An Airbus won't prevent you from doing anything stupid. It will however do something stupid for you."That is a tough questions to answer. The stall speed varies upon the load factor, configuration, altitude, temperature, and bank angle. For instance at max weight with a clean configuration the plane would stall at around 140-150kts (just my guess, don't quote me on it) but the airplane's Fly By Wire system will not allow the plane to stall. If need be it will override the pilot's inputs.