Motorola Droid X :: Contacts Random Change From Names To Numbers?

So Im new to the site and am in desperate need of a solution to keep the peace at my house. Its the weirdest thing on min her phone will show all of her contacts when she goes to check her text. In a matter of less than 5 mins the names will disappear and it will just show numbers. She puts the phone down and picks it back up later and its magic her contact names will show up with the messages. At no time do the contact names disappear from her actual address book tho.