I'd say not in distress. My son doesn't go to sleep easily, but he snuffles and twitches and rolls around. I sit watching him with the odd "go to sleep". He goes off in about 5 minutes now.

He used to get very distressed about going to sleep. He would scream blue murder if you stopped patting him before he was asleep. Now he goes off all on his own. The Science of Parenting points out the children in distress ONLY don't cry if their cries have been ignored, for the most part. So don't worry: if you respond to your child, you're not going to have much silent distress.