@$%&$^&($!!! I just got my iPhone 4. I traded in my old 3G at Radioshack. I get home to sync it and activate it and it says it is only compatible with OS X 10.5.8 and later! WTF!? I have 10.4.11 and am perfectly happy with it. I have to buy $170 dollars worth of software to sync my iPhone with my computer?!?! This is BS! Luckily I was able to activate the phone using my moms mac but I still dont have any contacts, apps, music, or anything!