I have a 62 plate Mondeo with the DVD Sat Nav fitted. The date on the Sat Nav updates the date/time via GPS and loses 1 day during GMT (its OK during the summer time) i.e. when its the 28th it displays 27th. Ford have been trying to fix this for 12 months and have now given up and advise that its "Normal Operation" i.e. they don't know what it is and have no intention to fix it. Has anybody else had this problem or can offer help?