Twitter experienced a Distributed Denial-of-service attack, starting at 6am Pacific Daylight Time on August 6, 2009. You can read more about it on Twitter.com's status blog: Ongoing denial-of-service attack. This has affected all Twitter applications, including TwitterBerry. Due to Twitter's defensive measures to protect against this attack, TwitterBerry may not work reliably until Twitter.com has recovered.  Please check with Twitter's status blog (status.twitter.com) for more information and updates on the situation.

TwitterBerry is working normally, and you will be able to send and receive tweets after Twitter.com has recovered. There is no need to re-install TwitterBerry.