Flights have been disrupted due to a discovery by Airbus that intense sun radiation could potentially impact flight control data. The issue has led to planes being grounded, with some reports indicating a software update is being implemented, although the exact nature and scope of the problem are not entirely clear. There are conflicting reports about the specifics of the issue and the actions being taken by Airbus, including whether a software glitch or a problem with fuselage panels is the primary concern.