hey all... I think I have a minor issue with my iPhone, or it could be the case with all iPhones and its just an OCD thing hahahah.. Anyhow, when i am using the ipod feature, and when I either skip between tracks or just choose another track, there's a very subtle crackling or popping sort of noise.. Its not very noticeable but it could escalate into something worse, unless its just a thing all iPhones do... Does anyone else know anything about this? Much appreciated.