Another possible cause for the white iPhone delay

Jason Chen:

Their source says that it's because of the glass that Apple can't easily cover up the light leakage, unlike if it were metal or plastic, where you can just add another coating of material. They also compare it to the Sprint EVO 4G leaking light, meaning that it's not a problem solely in Apple's manufacturing, but it might point again to Apple's pickiness about production quality that they won't let this get out the door.
Possible.

[via]