ok, I doont know how to keep stressing this until everyone gets it. resistors are not guessng games, and if you want a brighter led, buy the correct one, dont over power it. there is a reason it is called ohms LAW and not ohms maybe....
you need to use the correct resistor forthe correct condition.
@gerald, that site is a great read, I recomend everyone reading this has a look at it
@wite top, I wuld assume there is a transformer of some sort on the power supply limiting current somewhere.