[C Of K]

I think Jedi are generally considered masters after successfully training a padawan, though said padawan would always consider the knight a master by default.

I don't think Obi Wan was truly considered a master in all jedi circles until after Anakin was dubbed. Anakin may have had an apprentice and still not been a true master.

In Ep. 3 the little youngling referred to Anakin as "Master Skywalker" though Anakin wasn't a master. Master seems like a loose term even though Anakin was *A SPY* on the jedi council, and for the jedi council.