Today I had an interesting experience in booking a first AC berth of Konkan Kanya. While filling I gave my berth preference as Lower. I went ahead with the booking. It went to my bank and the amount was withdrawn and then just before the ticket usually comes up, it asked: It is no possible for a lower berth Click Yes, if you want the booking and click No if you don't want. I said no first and I would now take a couple of days to get refund. I tried again and this time said yes and got my CONFIRMED first AC ticket
The funny thing is that yesterday I booked a Howrah mail ticket and this did not happen