It's hit or miss. I'd say about half the time it will work after a reboot.Well, you can only break NDA if you are actually a developer - which everyone here with 3.0 is, right?
I'm just kidding, don't ask, don't tell, and I know we've got a lot of iPhone devs around. It seems to be a common issue from what I've read, does rebooting the phone fix it for you, OP?
It's hit or miss. I'd say about half the time it will work after a reboot.