I too would like to know: What is "CCleanerReactivator.exe" ?
.. and why are you registering CCleanerReactivator as a debugger for other programs like f.ex. Acrobat Reader (see picture)?
.. and why is CCleanerPerformanceOptimizerService running in the background despite me having blocked it in Options.
Acrobat Reader had stopped working and even after uninstalling CCleaner it was still disabled because the uninstall program failed to remove this Debugger setting in registry (picture).
After uninstalling CCleaner I got messages like
"Windows cannot find <name of .pdf file>. Make sure you type the name correctly, and then try again."
"Windows cannot find Acrobat.exe. Make sure you type the name correctly, and then try again."
