I really need some more data to diagnose this.
If you could post the values of $sec, $min, $hhour, $day, $month, and $year before the call to timelocal and the value of $log_time after the call, I can take a look.

BTW, did you really mean to use $hhour instead of $hour?

-Logan
"What do I want? I'm an American. I want more."