Unlike almost everyone else on these forums, I don't think there were too many Jedi in the prequels*. IMHO, the problem with the PT Jedi lies not with their numbers, but with their portrayal; if the PT Jedi had been less dogmatic, less hierarchal, more progressive, and more spiritual, no one would be complaining about how many Jedi there were.

*Frankly, I think there should have been more Jedi. According to the TPM novelization, there were only about 10,000 Jedi in existence at that time, and the PT itself pretty much corroborates this small number by never showing/alluding to the existence of other Jedi training centres beyond the Jedi Temple. Frankly, I find it extremely unrealistic that a religious order with a population smaller than my own modest-sized home town could ever serve as the guardians of peace and justice for an interstellar republic consisting of millions of worlds, therefore I think the Jedi should have numbered in the billions at the very least during the PT era.