Sunday 17.00ish. Downloaded some headers and articles, no problems. Then tried another d/l got loads of 'article not on server' messages.
Looking at one or two other threads, it's patently obvious that something has been going wrong with the news server for a few days now. It's also fairly clear from the responses others have had and my own experience of getting a fault logged that Zen are playing ostriches, burying their heads in the sand and making out nothing's wrong their end.
Perhaps it's time to take it to the wider community, let people know Zen and its support ain't all it's cracked up to be!