United Airlines Lifts Nationwide Ground-Stop After IT "Glitch"

And hour after the 'glitch', United just tweeted that the ground-stop has been lifted...
UPDATE: The ground stop has been lifted. We’re working to get flights on their way. We apologize for the inconvenience to our customers.
— United (@united) January 23, 2017
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Yet again, a so-called IT glitch has wreaked havoc with an American airline.