I think it's just you. I have none of those issues. I can't confirm it since I never looked it up but I read the 3g has a faster processor, I assumed it would be the same.
Floyd
Posted from my CrackBerry at wapforums.crackberry.com
I was having problems with my sounds until I realized that I had the sounds turned off on the side! I didn't know that button was there. Feel like such a dummy when I found it!
I'm having the SAME problem with my iPHone 3G and I'm pissed. I can't find any explination. (Mine didn't do this until I updated itunes to it's current version, then I noticed it just vibrated when I pluged in my iphone instead of one of the cool sounds.
I checked my settings and ll the sounds are turned ON.
I checked the RINGER bar on the side and there's no problems there.
It's firmware 2.0 related. The iPhone 3G is identical to the first iPhone on a hardware front for everything outside of the GPS and the 3G chip. I know that doesn't make it any better, but you can either get it replaced or hold off a couple more weeks until the rumored release of 2.1.