3.5.1 showing lots of very old articles from many sites

[tut]

I've been seeing lots of articles showing up in my Unread Articles folder that are years old, as far back as 2009 from what I recall. Hmm, most are from tumblr.com, but not all. Looks like tonight around 40 of the 100 or so "new" articles were actually new since last night. The rest I'd seen before and marked as read.

[Stern]

That can happen if a site for some reason changes its indexing scheme for the articles. If the article index key element changes, Vienna will consider it a new article. Older versions of the software tried matching article contents, but that proved too fragile and was dropped.

[tut]

Ah, good. Tonight it's only showing new articles, so I guess it just took a couple days for whatever changes Tumblr and others made to work through their servers. Hopefully I remember this the next time it happens, probably many years from now.