Damn bro I'm gonna have to subscribe to this thread. I have the same thing going on with one of my babies and it's in soil. I got the same first response you did from that same dude. Please let me know if you come up with the solution.
Yah I fixed my problem, it was actaully a few things that culminated into this...
I do't have a humidity reader, yesterday my boy brought one and it was like 10% where I'm growing...by the way I'm indoor hydro.
Anyway the low humidity, plus the dry heat coming from the lights, and to top it all off I had a Nitrogen defeciency.
I would definitely check your N levels and humidity...with hydro its a little easier because you can just flush. I don't really know how to help you cure your plants in soil. Try posting in one of the soil forums.