Just in few hrs of Digg v4 launches, user lashed out frustration hitting back by forcing all the top stories to link to Diggs competition, Reddit.com. Kevin Rose reponded, "Upcoming section, removed because it got only 0.4% of Digg's total page views, is coming back in some form. The bury button is also gone, but it's not coming back. Rose says removing the button was a way of shutting down the organized "bury brigades," who were systematically censoring certain viewpoints and topics on Digg."
There're a ton of bugs that Rose acknowledges and promises to fix, including issues with RSS feeds, third-party Digg tools, and missing favorites. It sounds like some people think the new design of the site ought to be filed as a bug, but Kevin's response, apart from pledging to look into some specific usability issues, is basically that you'll just have to get used to it.