This sort of thing happens when a system is down for a while, just after receiving a batch of news, and before sending it back out. (Or when the news spool disk on the server crashes, and it is restored from a backup -- not too common, but it happens). Anyway, old messages get injected into the mainstream feed *after* other systems have already expired the article and even erased the history record of it which is
*supposed* to keep such things from happening. But there is a limit to how long a history a system can store -- except those like google. :-)Enjoy, DoN.