RTC time running twice the speed with Time Library

Other Hardware 3rd Party Boards
3

Sample Output

2014/4/18 11:36:37
11:37:03
2014/4/18 11:36:38
11:37:05
2014/4/18 11:36:39
11:37:07
2014/4/18 11:36:40
11:37:09
2014/4/18 11:36:41
11:37:11
2014/4/18 11:36:42