My charger was producing hissing noise when I first using it on last Wednesday. Today I go service center and had it replaced, without a hassle.
Another good reason to go for SME set

Yup. This is the hissing sound coming out from my charger. I just had it replaced and finally can have a piece of mind ~.~

Your charger initially didn't have hissing sound? My charge only producing hissing sound when my battery is >90%. From lower to 90% no sound

Haha... you better go claim warranty now. When I was at samsung svc cneter, I heard they say only have 2 charger left in their store. If u no fast then bye bye liao.. hoho

Should put big big in 1st page so other potential buyer know about this. Else if no luck bought the stolen set, later warranty (touch wood) sure die....

I think this has been discussed numerous time. Here you can try to reduce the pauses
Open up S Voice and go to setting and disable it. The pauses is cause by the system waiting for next home button presses to determine whether to launch S Voice and Home.

I brought my phone+charger to service center without knowing I receive e-warranty or not nor did I bring along the receipt. They just replace the charger for me ~.~ lol
But bring your receipt to be on the safe side.