What's with the broken "more" link every few minutes?

the 'more' link invokes a closure stored in a hashtable. deciding how to expire these cosures and continuations is probably the hardest problem in web development today. most often we just wind up using an LRU, which would mean that your 'more' link would go stale once some number of other such links got generated in the same webserver.

Not sure, but it occures for me too (only if I leave a page idle for a while, and then click the 'More' link).

this has been my only problem with hn. good links. great discussion. can't get more links w/out going back to the top

Ditto here.