Imperius Curse

[cgbrennan2003]

No: HPFGUIDX 57312

In Goblet of Fire, Moody (crouch) puts Harry through the Imperius 
Curse "four times in a row" until he can throw it off completely, 
after having almost thrown it off the first time Moody/Crouch cursed 
him with it. (p. 231, american)

Later, when Voldemort uses it against Harry, JK writes that "And 
Harry felt, the third time in his life, the sensation that his mind 
had been wiped of all thought..." (p.661)

Third time?  There is no mention of a time between the first day in 
class and then with Voldemort that Harry is cursed, and since it was 
done more than twice on the first day, it can't be the third since 
then.  It sounds like JK is saying that the time in class was Harry's 
second time...so when was the first?  Is it possible that being able 
to throw off that curse is something Harry was born with, thus 
helping him escape Voldemort?  Or did V transfer that skill to 
Harry?  Is it a mistake?  Misprint??

Any ideas?

cgbrennan