My server has the hard occasional lockup.  Replaced RAM, CPU, cables etc but it can run fine for a week, or lockup a couple of times a day.  In every instance there is never any indication on the syslog of what caused it.   It locked again today.  Looking at syslog I see some entries I've never started before.  it's either an unraid triggered dump/trace, or something else.  I've attached the portion here in the hope someone can translate it into english.   It all starts with: