Thank you very much for your advice and comments. :-)(y) I am relieved this seems not to be malicious. After the first reply to this thread, I decided to request support from Glary's. I will post their reply here, so it will help anybody that notices the same issue.
Hello,
Glary's Utilities cleaner is now spending much time cleaning the registry folder Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Search\PluginResourceData\
I checked the folder and into it there are dozens, perhaps more than 100 registry keys which I cannot find to what software...