Just updating this old thread with my own experience with DS2.11, who sleep walks and talks pretty much nightly. He wakes (or exhibits partial wakings) multiple times each night; likely 3-4 times. He will crawl in bed, rub his eyes, fiddle with his pyjamas, roll around, and talk. DS and I cosleep, but I spend the first part of the night with DH after DS settles, after which point DS usually sleep walks in to find me.
He has literally done this since birth. It wasn't until recently that I discovered that somnambulism incorporates more behaviours than walking!
I am a frequent sleep talker and infrequent sleep walker, with the latter usually happening during periods of exhaustion.
