I had a few issues with the stable build including the clock, proper USB functionality, and freezing during recording. It was suggested to download the (at the time) current build. I did but am still having problems with the system clock.
The clock runs fast, gaining more than 24 hours per week.
Additional Notes:
I don't use the OF unless I absolutely have to and have not used it since the last update.
[EDIT]: The reason I put this in hardware is that it wasn't a problem on my e260v1. Although the v1 never had RB 3.6 on it (and the screen is shattered) so I can't confirm that it *is* hardware.