It seems I am also having this bug on my computer: https://bugs.kde.org/show_bug.cgi?id=376537
It seems they solved it already for Archlinux systems. What would be the Sabayon (or Gentoo) version of this solution, please?
My computer is overheating, and I can't tell whether this is related or not.
If I run ksysguard from Konsole, I get a looooong output, but I noticed this:
It appears two or three times.libksysguard: Error received "The daemon program 'ksysguardd' failed." ( QProcess::ProcessError(Crashed) )
libksysguard: daemon exited, exit status QProcess::ExitStatus(CrashExit)
*** Error in `ksysguardd': double free or corruption (out): 0x0000000001590a00 ***
Any hints, please?