[Brian]

The support ninjas will likely have more substantive help, but if the *phone* is crashing, the situation is more complex; the iPhone OS is designed such that the worst thing we can possibly do is crash our own app. If something is so deeply wrong that the whole phone goes down, that's pretty unusual.

It could be OmniFocus, could be a bad install of the OS, or even a hardware issue. If there's an Apple store near where you live, it may be worth having them take a look at the phone just to rule out the latter two possibilities.