iPhone's

Okay, so those that know me, I've been pretty much Windows through and through for many a year; well, finally last week I gave up on Windows mobile and turned to the iPhone.
So far, so good. The battery life seems slightly better than the LG phone I had and it is certainly more stable.
Had an interesting one today though, I wasn't getting any sound out of my iPhone. headphones worked fine, just the speakers weren't working.
Quick google around and it seemed like it was a relatively common problem requiring new hardware - didn't like the thought of that really. Then I remembered that I'd had my phone connected to my laptop when changing sounds settings on the laptop. Hmm, suddenly, I'm wondering if that is the cause.
So, I get home, connect the phone to the laptop and sync through iTunes. Then turn the sound back on on the laptop and sync again - hey presto, sound is now working on the phone.
So Apple, I think you need to think about how much information you sync between iTunes and the iPhone - this is certainly one setting I didn't expect to be synchronised (and unable to change on the phone!)