The electrical inspecters around here have certainly been lax in their enforcement on AFCI's
Bob,
If your jurisdiction is using the 1999 NEC code only the Receptacle Outlets are specified to be AFCI protected (in Bedrooms)
BTW, My vote is not to put smokes on a dedicated circuit. I've had customers ask for it (so they could turn them off) but I have always managed to talk them out of it.
