A small percentage of people are currently unable to follow or unfollow others. We are aware of the problem and the root cause. And we’re working to fix this as soon as we can.
We will update as we learn more.
Update (1:50p): We’re now in recovery and assessing the underlying cause of this outage.
Users will see some badly formatted pages for the next several minutes as we fix a problem with our static assets.
Some users are running into trouble using third-party clients that rely on OAuth. We’re aware of this issue and working to resolve it.
Some Firefox users are reporting trouble updating on twitter.com with Firefox. If this is happening to you, try clearing the twitter.com cookies stored by your brower.
We’re actively working to bring the site back online following an downtime that started a couple minutes ago.
Update (10:15a): We’re recovering from the downtime and looking into the external causes.
Some users will have noticed a lack of fresh tweets in the last hour. We’re working on this problem.
Update (5:18p): These delays are now clearing.
We’re performing some system maintenance and have chosen not to go offline as we make these changes. As a result, you may see increased errors or slowness while the changes are made. This condition should resolve quickly.
We’re working to recover from a site outage and will update as we learn more.
Update (12:17p): We’re back up and analyzing the traffic data to determine the nature of this attack.
We are suspending a number of accounts that have been affected by malware. We are sending instructions to the owners of these compromised accounts so that they may regain access. If you have been suspended, please check your mail for information on how to restore access.
Twitter’s help pages will be briefly unavailable during our provider’s planned downtime for database maintenance. For two hours starting at 12:45a Pacific on Sunday, you’ll be unable to make changes to account settings or access help pages. Though web pages will be inaccessible, all email will be routed as usual.
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Update: Help pages and account settings are once again accessible.
Some users are unable to update on the web using Firefox 3.5. Other actions like following and sending DMs are also affected.
We’re working on solving this problem.
Due to defensive measures we’ve taken against the ongoing denial-of-service attack, some Twitter clients are unable to communicate with our API, and many users are unable to tweet via SMS.
We are working as quickly as possible to restore our full service.
UPDATE: Users should now be able to update via SMS. (8/9/09 - 12:00 AM PST)
We are defending against a denial-of-service attack, and will update status again shortly.
Update: the site is back up, but we are continuing to defend against and recover from this attack.
Update (9:46a): As we recover, users will experience some longer load times and slowness. This includes timeouts to API clients. We’re working to get back to 100% as quickly as we can.
Update (4:14p): Site latency has continued to improve, however some web requests continue to fail. This means that some people may be unable to post or follow from the website.
We are determining the cause and will provide an update shortly.
Update: we are defending against a denial-of-service attack.