@moonman
1) You've always had those Page not found "errors" (just ordinary 404 when someone requests a URL you don't have), they're just a bit more visible now!
2) Give me a link to that particular thread. Could be 0) decentralised is not distributed 1) moderation 2) temporary connection failures 3) all of the above

3) Update Qvitter too! Always try to be using the latest of the two at the same time, we sometimes fix stuff that assume such update procedures. Recently I did one of those maneuvers.