Why does HN Say unknown or expired link when I click "more"?

1 points by pghimire 14y ago ↗ HN

2 comments

[ 0.27 ms ] story [ 10.6 ms ] thread

icebraining 14y ago ↗

http://news.ycombinator.com/item?id=766839

http://news.ycombinator.com/item?id=163696

http://news.ycombinator.com/item?id=28944

[deleted] 14y ago ↗

(comment deleted)