This is driving me nuts! RSSOwl is perfect for this new user, except for this problem: the feed ADL (Arts and Letters Daily, http://www.aldaily.com/feed) loads just one news item at a time. When a new news item arrives, it replaces the older one. The older news items are not visible. My other feeds are loading fine, and I've checked the ADL feed settings and they are identical to those of the other feeds. It was working fine until a few days ago, when this inexplicable behavior began. The RSS feed itself must be OK, because Feedly populates ADL without a problem.
Any ideas as to what I could try?