Interesting.. I think it's probably my continuous activity on my phone then.
It's always different for different people.. we all can't do the same amount of use on the phone as everyone else
I get about 50 emails a day, and SMS around 3-500x per day,
plus web browse for a good solid 2+ hours a day,
while listening to MP3s same amount.
So.. that could have something to do with it.