Stuck pages

I presume this problem might be common, but I can’t find any reference to it. There are numerous static pages on my site (www.ponohouse.com/ponoblog) that have suddenly become inaccessible to browsing. Some are subpages (in particular, subpages to “maui Places” and Activities) but some are stand alone. I’ve tried changing them to the master page and still they can’t be browsed. I can edit them, they all still exist, and they can be seen in preview but can’t be browsed.

I had a spate of “new users” from the .ru location recently–enough so I installed captcha. Any chance that they left me a little present?