To help diagnose the problem, could you let me know:
1) Did you use the pre-configured SD card image, and then installed and switched to the unified firmware?
2) or Did you start from a fresh raspbian image, and installed the unified firmware?
3) Did you configure the system to use the DS1307 RTC in any way?
Basically I need to be able to reproduce the issue in order to debug the code. Thanks.