Twitter is up-and running for most users after the micro-blogging site was shut down for more than 90 minutes earlier today.
The Twitter shutdown affected users around the world.
Apica, a web performance monitoring company, said Twitter crashed at approximately 11:23 a.m. EDT, returned momentarily around 12:04 p.m, and then crashed again at about 12:15 p.m.
The site was back online for most users around 1:30 p.m., though Apica noted that some "users along both coasts continue to experience problems connecting."
As of 2:45 p.m.. Twitter had not disclosed the cause of the outage on its Status Page, but did note that it is fixed.
Twitter did not respond to a request for comment on the outage.
Once the site was back online, twitter users were quick to express their frustration with the outage.
And @john_mcguirk joked: "Twitter could have warned me about this outage before I made that sandwich I was so looking forward to tweeting about."
The crash came a day before the opening ceremonies at the Summer Olympics in London, which is expected to be a prime subject on social networks in the coming days.
In fact, Twitter has created a special page to aggregate tweets from Olympic athletes, coaches and their families, along with sports reporters and announcers.
The Twitter.com/#Olympics page went live today.
Sharon Gaudin covers the Internet and Web 2.0, emerging technologies, and desktop and laptop chips for Computerworld. Follow Sharon on Twitter at @sgaudin, or subscribe to Sharon's RSS feed . Her e-mail address is email@example.com.