Got 2 2400s and the MSI board, booted up... 1 cpu detected, scratched my head a bit, flashed the bios, it then decided I had a 2400+ instead of "unknown cpu", but still only one. More head scratching, re applied paint to the L5 bridges... 2 cpus detected.
Other than that no issues so far. And goddamn, it's quick.
One thing I have noticed is that CPU 2 seems to run about 6C hotter than CPU1, not sure why, I even swapped cpus/coolers over, and whichever is in socket 2 runs about 6C hotter. Maybe it's an airflow thing, or maybe it's just reading the sensor slightly wrong.