I've created a couple News items, both of them do NOT have the Allow Comments option checked. I also went into the News Settings option and set "AllowComments" parameter for all news items from the default of True to False.
The problem is that when I drop a News Widget on the page to display a list of News items each item has "Go Comment" link under the item. I have no way of preventing this link from displaying. The link when clicked takes me to the full page view of the news item with no commenting options visible. So it looks like the AllowComments = false setting is used for Single Item view but it's not used for List View.
It would be really great if you could make all the built in templates available to us so that we can work with them to hack in fixes as I honestly have zero confidence the release of SF4 is going to be even close to bug free. Since I'm going to have to hack all kinds of fixes I'd really appreciate it if I could get started on the hacks now...