Does that 30 min nap mean not tired enough? or overtired? i always get confused... seems like maybe you could have kept him up and he would have made it?? I am in the same boat, too. She goes down just fine for both naps, but they seem to be creeping too close to either the 2nd nap (from the 1st) and then the 2nd for bedtime. She still sleeps ok, but I can tell this will bite us soon!
jen