I now noticed that if you click from here (i.e. with the refer of news.ycombinator.com), it won't load.

No idea why though.

Hm. Yea, the content for the main page is requested and loaded, but none of the supporting content (CSS, images, etc.) is requested.

Copying the URL into another tab loaded the whole thing.

I don't really have time to dig into it further...