Ok, its been too long since i reread the books, but wasnt Lews Therin healed by Ishy so LTT could recognize that he had killed his wife and all his kin? Didnt Ishy say that his healing was more painful than Aes Sedai healing but also not temporary? Moments after the healing, LTT blows himself up and is dead for what? about 3000 years?

So my theory is that LTT had been permanantly healed and that while dead he could not draw on the source to make himself bonkers again... so a dead LTT **should be** sane. This is partially supported by the fact that Rand was sane since birth and up to the beginning of the story. So if LTT is sane, why does he come off as a fried egg when Rand hears his voice in his head? I think this is because it is not actually LTT but the crazy manifestation of the taint on Rand himself. This may be why every time Rand asks a direct question to LTT the voice dissappears. Especially when Rand says "are you really there?" I doubt LTT really is there.

So somewhere along the series Min says something like: I see two of you, the same but different, and you touch and become one. I take this to mean a crazy Rand and a sane and the two either become nutso or they dont. And unless all the seals are broken soon (seals are the focus of the counterstroke ... i.e. taint) I think Rand will go looney tunes.