U.S. online sales grew 14 percent on Cyber Monday, on track to set a record, leading some retail websites, like Target Corp’s, to crash temporarily due to high customer traffic. Website outages and slow checkouts during the five-day shopping spree starting Thanksgiving Thursday, were also reported at PayPal Inc, department store chain Neiman Marcus, Wal-Mart Stores Inc, L Brands Inc’s Victoria Secret, and at Foot Locker Inc.