Same here!! Thought I was going crazy. I'm with Fido on a 3G.My iPhone was a royal screw-up yesterday.
Don't know if it was Apple or Rogers. I would look at it and it would be old time then new time then old time again. Throughout the day the time would switch back and forth.
I've checked my settings for anything time related but everything is fine.it sounds like there's a mismatch between the time set natively on the iphone, and the time it's reading from the cell tower