RTC defective?

[beanbean]

Hi,

there is a strange problem with my new Olimexino-STM32:
I have implemented a RTC using https://github.com/bubulindo/MapleRTC, with clock from the LSE crystal.
This is not working, i.E. the controller hangs on reading the time value, and no timer interrupts are called. However(!), when I place my finger slightly above the crystal (no touching required), the RTC suddenly starts to run, and when I remove my finger, it stops again. This is reproducable. Is it a hardware defect, and is there anything I can do about it? (FYI I am using a Rev. C with power supplied via USB)

Thanks