My iphone 3G worked just fine for the first few months after the mms update. But then slowly it began to lose it's ability to send mms messages to people. Now it will send a pic every 50 or so tries. My dad is having the exact same problem with his phone. Even when he can get pics to send to me I never receive them and same when I can get pics to send to him. I can for the most part receive pics from other people though.