The issues are a bit different with our DS since he is still only 4:6. But there is certainly something in the area. Namely, he is often off - and I mean *way* off - in his own world. The teachers at school have mentioned it in an increasingly exasperated way. At our parent-teacher meeting in November they said that every day at recess when it is time to go in precisely 12 of the 13 kids are properly lined up and ready. Invariably it is DS who is off wandering somewhere. One day they spent half an hour combing the school and playground for him before someone finally found him happily hidden inside an enormous truck tire singing to himself and "letting" his hands talk to one another. I don't know if this is an organizational challenge, but it seems to be in the area. As with your DS's, though, when he is focused on something he can be laser-sharp. Do you both find the spaciness trait as well as the organizational challenge? It's too early for us to have much evidence of the second.
I am worried that the teacher is starting to think our DS has ADHD. She made some rather cryptic suggestion about that the other day. I think I've read here or elsewhere that this is a common mis-diagnosis for gifted kids (especially gifted boys?), but I don't have any memory where I saw that. Do you have a link, S from MD?
BB