Nope, I am still puzzeled, especially since nobody else seems te have this issue. Most of the time, when Googling correctly, I find an answer to any issue, but not this time. Registry setting & msconfig tell me that CCleaner should run at system startup ("/auto"), but it just doesn't... Not after uninstalling/installing, not after restoring my power options to default, not after reinstalling in admin mode, not after setting the "Run Ccleaner when the computer starts"-option as an admin... And the strange thing is it used to work correctly, Before, I used to see the icon is the taskbar. /Monitor doesn't work either, only after I've started Ccleaner manually. I just need to figure this out because I cannot stand it that something doesn't work as designed ;-)