I have an iPhone 3G and updated to 3.0 on the day of release. Everything worked fine, until last night. I'm didn't receive a couple of emails and some are extremely slow to be delivered. I did restore the phone and backed up the phone. The email is still very sketchy. I don't have exchange or mobile me. I just set the phone to check every 15 minutes. Yahoo is being delivered somewhat slow, but Gmail is having the most trouble. Is it my phone? Or is it the email service itself?