I'm not aware of such errors. Can you give some examples?
One bug would have resulted in the block reward coming back (at 50 BTC per block) when it should have been zero (so the supply was not actually 21M).
He didn't even predict GPU mining (that seemed to take him completely by surprise and he basically asked people not to do it).
(and there are plenty of other things)
*lol* The GPU-Mining is actually pretty funny. I really did not anticipate such thing from him. Well he probably was surprised by the worth bitcoin reached and had not thought through the following effects.
The thing with the block reward sound like a software bug that might happen when coding. Well, it would have been enough time until that effect would have been triggered.
