This may be a bug, and we are currently tracking this issue, and are looking for assistance in finding information about. Could you reply with the answers to these questions so that we can locate the root of the issue?
-Which ISP do you have?
-What streaming software are you trying? (with version #)
-Have you tried using other streaming software? (what version #)
-Which ingest server is this occurring on?
-Have you tried connecting to a different server?
-Have you tried streaming with a very low bitrate? (25% or lower of your maximum upload)
-Is your timezone correct on your profile? (editable at bottom of http://www.twitch.tv/settings)
-Do you have your displayname set?
-If you change it, does this issue still persist?
-Specific date and time you experienced this issue (as close as you can get it)
-Can you create a test account and try streaming with that (make sure to visit dashboard to create channel!). Name it USERNAME_teststream if you need a generic name.
Thank you so much for working with us to resolve this issue! Please answer ALL the information you can to help us (and you) out :)