Sometimes I click threads open and read through them and then add my comment. When I do this, I get a single line that says, "Unknown or expired link."<p>If I refresh, the thread appears and I can post my link.<p>What is the purpose of this timeout?
This problem stems from a limitation of the way HN maintains state. An earlier post with some links to the problem code is here: <a href="http://news.ycombinator.com/item?id=163755" rel="nofollow">http://news.ycombinator.com/item?id=163755</a><p>This is a well known problem pg hasn't gotten around to fixing. See YC: "unknown or expired link" -- fix it already
(790 days ago)
<a href="http://news.ycombinator.com/item?id=28944" rel="nofollow">http://news.ycombinator.com/item?id=28944</a>