Some users are missing tweets 2 days ago

Some users are missing tweets from their timelines.  We are aware of the issue and investigating.

Update: This problem is resolved.  All missing tweets have been returned.

Experiencing elevated error rates 3 weeks ago

You may experience some problems and errors when using the site. We are aware of the problem and are taking action.

Timeline delivery gap 3 weeks ago

Some users are seeing a delivery gap of about 5 hours on the user timeline and mentions timeline. We are working on resolving the issue and expect it to be fixed shortly.

Update: This problem is resolved.