Update: 1:30 a.m. PDT
We are bringing login services down at this time to continue to troubleshoot issues which are causing players to receive Error 3006. While this should not disconnect players from the game, if you're not currently logged in and playing it means that you will be unable to connect to Diablo III until further notice.
We sincerely apologize for the inconvenience and will continue to provides as they occur. Although we may not have updates to share hourly or at predictable intervals, we are treating this issue as a priority and will report back with any relevant news as soon as we have it.
Thank you again for your reports, and for your patience.
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We're aware that players are currently receiving an Error 3006 when reaching the "Retrieving Hero List" step during login or when attempting to access the auction house. We're working to resolve this issue as quickly as we can and hope to have everything back up and running as soon as possible. While we do not have an ETA to share for when login and auction house access will be restored, we'll continue to provide updates as they become available in this thread.
Thank you for your reports!