[pbogdan]

It's been slow for me as well past 1-2 weeks and yes, it's problem with static files - they take 20-30s to load.

Caching seems to be fine - I'm getting 304s for stylesheets and images (and they are served from local cache according to firebug and chrome dev. tools) which means it actually takes 20-30s of wait time for the server to just return the headers.

I wonder if it might be problem with Keep-Alive which is on (with 15 sec. timeout I think) - there's probably bunch of apache processes / threads sitting idle waiting for connections to close and with the amount of traffic hn gets I would imagine there's quite a few of them.