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Please ensure that you are running the latest version of the beta code.
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Problem with Beta 5.0:
I haven't seen any issues or problems but the temperature seems 15-20 degrees C higher than the stable branch. It is currently steady at 60.1 deg C. Since this is so new I haven't been able to locate any sort of benchmarks. I am using an RPi 3 in an aluminum case with no fan. Anyone else seeing similar temperatures?