Comment # 8 on bug 104817 from Marcus Husar

It seems to me that this is in fact a CPU related problem. Since July 25 I
don’t have any problems. My system is pretty stable. What helped was to add
idle=nomwait to my GRUB command line. This has fixed those problems for me.

Please try to add idle=nomwait to your GRUB command line. I think this bug can
be closed.