I am curious to know if anyone else is having an issue with using headphones and your notifications can still be heard through the speakers? I just finished a chat with Samsung and they say it is supposed to work this way. I claim that they shouldn't - no other phone works that way.
It's not an issue... it's a feature. I too had other devices that sent notifications to the headphone... the S3 is the only one that does not. i have had my phone for nearly a year and found the feature is actaully useful. There are times I would leave my headphones connected, place the phone at my desk and walk away from it. Without this feature I would not hear any notifications... I've learned to like it.