The Target Corporation says that a glitch in its system caused delays at registers at some of its US stores on Sunday night, but that it wasn’t due to a data security issue or a hacker. Customers around the country took to social media to report long check-out lines due to registers not working. Target employees apparently tried to placate waiting shoppers by handing out $3 coupons in some stores. The big-box retailer has not elaborated on the exact problem or problems, and it’s not clear how many stores were affected. The problem has reportedly been fixed. Target is still trying to regain customers’ trust following a data theft late last year of millions of customers’ information.