Don't worry Indadhanu, I can ease Shel's mind on that front, my second was 50min.

My first was 11 hours (started off posterior and also labour pretty much stalled during the 30min drive to hospital). Second less than an hour but was engaged from 20 weeks, smaller than the first, only 18months between births, and if you believe personality is any factor than in this case it pretty much explains everything.