I HAVE A CUST. WITH NEW R-7 91J AND THE YEAR (07) SEEMS TO CHANGE TO (06). I HAVE CHANGED IT TWICE BACK TO YEAR 07. IT SCREWS UP THE VOICEMAIL (PC LRG) BY GIVING THE WRONG DAY WHEN CHECKING MSGS.MY SUPPLIER THINKS IT MIGHT BE THE CO SENDING THE WRONG DATE ON CALLER ID.BUT CO SAYS THEY DON"T SEND DATE. ANY HELP.