@leocg
IMO, you overuse the topic-lock and dup feature.
Someone had problems updating Opera. Two people gave suggestions (including me). One suggested using sudo on the cmd line -- which you said wasn't windows, yet I mentioned 2 ways to do do that. But one can do that via alternates. 1) sudo via the GUI someone pointed at a "wsudo", and I mentioned the equivalent "run as Administrator". and 2) a simple "runas" in cmd that does the same thing, but now can't find my post as base was labeled duplicate.
It is the case that there might be more than one solution, and barring off-topic or Spam, you might consider leaving posts rather than using what some might consider, heavy-handed moderating options.
Similarly, deleting user postings can be off-putting or "aggressive" to the user(ex. @Lamsoonia )on the recieving end.
Cheers -- and thanks for your time in doing what is often a thankless job.