"Unknown or expired link."

[utopianmonk]

Can somebody please explain why this happens? I'm pretty sure there is solid reason behind it, but it just evades me. Why expire?

[pg]

They refer to closures stored on the server. If they don't time out eventually, you have a memory leak.

[jmcguckin]

Yes, but the default timeout is too low. I can rarely get three or four pages deep into HN before the timeout. It seems like this changed recently.

[mindcrime → jmcguckin]

I've noticed the same thing; the timeout value seems to have changed sometime in the past week or so. I now routinely get the "expired link" message after only a little bit of HN browsing. :-(