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Twitter 'fail whale' blamed on networking bug

Microblogging site now back online

A networking equipment malfunction disrupted Twitter yesterday, causing the microblogging site to become unavailable to users for hours and forcing company engineers to shut down key features to perform the repairs.

The technical problems have also affected third-party applications that use Twitter APIs (application programming interfaces).

Twitter started displaying its notorious 'fail whale' error page to its site visitors, and acknowledged the problem in its Twitter Status blog. Over a period of 90 minutes or so it posted several updates, alerting users about the performance problems and about features, such as its search engine, that it was disabling to fix the issues.

Twitter declared the problem fixed yesterday evening, only for the problems to re-emerge.

It was the second day in a row in which Twitter's service ran into performance problems. On Tuesday, Twitter.com and third-party applications were unavailable for about one hour.

Outages at Twitter get intense, widespread and instant attention thanks to the service's massive usage. In May, users posted 2 billion 'tweets', according to web uptime monitoring company Pingdom. That is double the number of tweets posted in December of last year.

Twitter has become the preferred service for posting brief text status updates on the web among individuals interested in 'tweeting' about personal matters and among organisations and celebrities promoting their brands, products and projects.

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