This post indicates they are having problems due to growth: http://www.reddit.com/r/blog/comments/b7ko0/we_know_the_site_is_slow_and_were_trying_to_fix_it/ http

This post indicates they are having problems due to growth: http://www.reddit.com/r/blog/comments/b7ko0/we_know_the_site_is_slow_and_were_trying_to_fix_it/ http://www.reddit.com/r/blog/comments/b7ko0/we_know_the_site... More slowness than being "down or broken".