Angela wrote:
If you want a non-editable page, please don't use a wiki. I see no reason user pages need to be protected any more than any other page. You don't own these pages just because you created them in the user namespace. See http://en.wikipedia.org/wiki/Wikipedia:Ownership and http://meta.wikimedia.org/wiki/Protected_pages_considered_harmful.
In practice, though, users are generally considered to "own" their user pages. If someone edited my user page, I would probably move their comments to my talk page, and this seems to be standard practice---a user's user page is only for them to edit, barring extenuating circumstances such as the user being banned.
-Mark