Melanie, thanks for asking the question. I've just joined this forum, and was going to post pretty much the same topic. smile
So, it's been really reassuring reading all the responses.
My 16 month old little girl isn't walking yet either. I've generally felt that she's fine & will walk when she's ready, but every now & then I worry & wonder when she'll start. She's the same as your DS - walks while holding our hand, pushing her toy car around etc. She walks while holding onto furniture, that kind of thing. She took a few steps on her own the other week, but not since. I think it freaked her out a bit smile Like someone else mentioned, I think they possibly just have a more cautious temperament, and want to be sure they can do something properly before starting.
She was also a late crawler, at about 10-11 months.
I also heard somewhere, that the crawling phase is really important in so many ways for their development, so most bubs will need to crawl for a certain amount of time, before walking.
Anyways, by the sounds of it, it won't be long before our bubs decide to take off on their own. smile