We are experiencing a recurrence of the issues from Wednesday. The duplicate tweets will be resolved shortly.
Update: The issue has been addressed. Duplicate tweets will be removed over the next few hours.
You may see intermittent errors when posting Tweets. The Tweets are being saved and we’re looking into the issue.
Update 4:00 PM 10-11-10: This issue subsided earlier today. All Tweets were correctly posted.
We are aware that many tweets with @mentions are not appearing for the user mentioned. We’re actively working on fixing the issue. This affects Twitter.com and 3rd party applications.
Update: Oct 8, 2010 9:42PM: Mentions are flowing again. Any @mentions missed during this period should be restored shortly.