Hello Marc, I can't reproduce this error anymore. The system was running untouched after this Bug appeared. There was no software install reboot or anything done, Not even the local terminal was closed. Now it works just fine using the same conditions as before. As you mentioned that /etc/localtime might be corrupt- just from a filesystem point of view, there was no fs error recorded. And I did not made a copy of the file when the error appeared. The System is also running on ECC Memory. The Integrated Management console did not show anything that would point to a RAM issue. Also there is no MCE Error recorded...
I'm not sure how I can reproduce this error againm or how to proceed further.