Turns off (according to DTS), this is a bug in the way iTunes handles ad-hoc. This problem is specific to ad-hoc - my development distro works fine, and they tell me that the store app will handle it too - it's just an ad-hoc distribution (a common mechanism for things like beta testing.)
In particular, the DTS answer:
" . , Ad Hoc, , iTunes ( 8.0.1, ).
iPhone OS , .
(, ? ?: D)
(: , . , ;)