CONCERN: Customer reports refrigerator is leaking water into fresh food section and not cooling well. DIAGNOSTIC AND CAUSE: Inspected refrigerator defrost drain line for water leaks, found the source of the leak coming from the refrigerator defrost drain. Removed back panel to inspect for clogged drain line. Found the defrost drain restricted with ice and debris and fresh food evaporator covered in ice. CORRECTION: Cleared the refrigerator defrost drain and evaporator of ice and debris, operation now normal. This is believed to be a design flaw with Samsung bottom freezer units, and as such may present problems again in the future.