dmesg full of happy messages:
[422615.937175] TSC 0 ADDR 303fff2580 MISC 424c3e00 PROCESSOR 0:306e4 TIME 1430311410 SOCKET 0 APIC 1 [422615.937256] sbridge: HANDLING MCE MEMORY ERROR [422615.937351] CPU 24: Machine Check Exception: 0 Bank 14: c800d74d00800091 [422615.937352] TSC 0 ADDR 0 MISC 2431800222001a8c PROCESSOR 0:306e4 TIME 1430311410 SOCKET 0 APIC 1 [422616.696930] EDAC MC0: 13926 CE memory read error on CPU_SrcID#0_Channel#1_DIMM#2 (channel:1 slot:2 page:0x1c9faa4 offset:0xfc0 grain:32 syndrome:0x0 - OVERFLOW area:DRAM err_code:0001:0091 socket:0 channel_mask:2 rank:8)