Had mine exchanged
I had exactly the same problem with my new iPhone 3G in the UK. Initially, the Home button had to be pressed really hard to do anything -- so hard that a double-click was impossible. After 3 days it stopped working altogether. Took it to the Apple Store where they got me to talk to someone at the Genius Bar. She said it was a "known software problem", which could possibly be fixed by a full reset -- not sure I'm convinced, as it certainly seemed like a hardware issue to me. She also said that a fix would be released 'soon'.
Anyway, the full reset was taking forever and I had limited time, so I asked for and got a replacement.
fb
I had exactly the same problem with my new iPhone 3G in the UK. Initially, the Home button had to be pressed really hard to do anything -- so hard that a double-click was impossible. After 3 days it stopped working altogether. Took it to the Apple Store where they got me to talk to someone at the Genius Bar. She said it was a "known software problem", which could possibly be fixed by a full reset -- not sure I'm convinced, as it certainly seemed like a hardware issue to me. She also said that a fix would be released 'soon'.
Anyway, the full reset was taking forever and I had limited time, so I asked for and got a replacement.
fb