As the OP can probably guess by the posts that came after hers, the question that is frustrating her now is just life's way of preparing for the questions when you get here!
For me, they seem to come in streaks - no one bats an eye at my accent for months, and then all of a sudden a rash of questions break out.
The most recent one is 'how long have you been here'? (What, waiting for this bus?
!!) After nearly 4 years here, there must be something about me that makes people believe I'm comfortable in my skin and not a 'newcomer'.
The last time I was questioned at the bus stop it was when another woman and I were trying to see the bus times, in the dark, using the light from my mobile phone! We'd just got off the same bus and were at a different bus stop waiting for one of two buses. She said 'you've had quite a journey to get here!' and I said, 'yes, I just came from seeing a film with some friends'. Duh!!!
Still, it is a way to have some fairly nice conversations once you get past that initial question...