message date stamp resets on reboot

Hi,

ever since I have had this phone, every time I reboot my phone all the date/time stamps on the messages change to the same date/time i reboot the phone and it reorders them. i have tried turning on and off imessages and turning on and off automatic time and all the other tricks it gives you when you good the topic but nothing works. Does anyone know how to fix it? I have tried this in both imessage on and imessage off modes.

Thanks!