NEW YORK (AP) — All United Continental flights in the U.S. were grounded Wednesday morning, July 8, due to computer problems.

United said in a statement on Wednesday that the problem was an issue related to “network connectivity.” The FAA lifted the ground order at about 10 a.m. after the issue was resolved.

It is the second time in two months that the Chicago carrier has been hit by major technical issues.

United Continental Holdings Inc. had a temporary halt to all takeoffs in the U.S. on June 2 because of what the airline said were computer automation issues.

Its stock declined slightly in premarket trading.