2 days of SWA “technology failureunspecified piece of equipment failed”

so what's going on with SWA? are they facing a monolithic failure due to a monolitchic system? nothing specific in the bloomberg article. any better reporting out there? http://www.bloomberg.com/news/articles/2016-07-21/southwest-flight-cancellations-extend-to-second-day-on-it-outage