I've been combing through forum posts for a few days and cannot find an explanation for the green spot issue other than it occurs under fluorescent lighting. At work I get the greent spot, at home under CFLs I get the green spot AND the white balance issue of yellow pictures. Has anyone com across an explanation why fluorescents do this. I am trying to give apple time to put out the software update to see if they fix the white balance issue, but even then since I can't figure out what causes the green spot I can't figure out if a software update would even work. My best guess is maybe the sensor needs recalibrated, but again no real idea. If theres no fix by next week I guess I'll have to ship it back since I got it online. Brings me to my second question, anyone get one of these magical black box iphone 4 replacements, that magically work like they are supposed to, from an online replacement or are they only from in-store replacements?