I receive Timeout error. Checked that the feed is being successfully fetched by Digg Reader or Feedly.
Them’s the breaks, unfortunately. I give feeds 20 seconds to fetch and parse. The average feed takes 1 second.
Still doesn’t work, and I’d assume that problem isn’t related to artgorbunov.ru (since other readers work well), but it should be some technical issue at Newsblur side.