Verizon has acknowledged that approximately one tenth of one percent of Droid X devices are experiencing screen issues which include flickering and banding. The issue has supposedly been resolved by Motorola and affected customers can contact them for a solution:
Verizon Wireless and Motorola are aware of a very small number of DROID X units that have experienced a flickering or banding display. Motorola has resolved the issue and is continuing to ship the phones. Any consumer who experiences a flickering or banding display should contact a Motorola customer support center or Verizon Wireless.
Kudos to Verizon and Motorola for acknowledging this problem and offering customers a solution. [Engadget]