The program downloaded, installed, and seemed to run fine until it got to file #143874. At that point, it started spinning its wheels, and would not pause, stop, or close. I had to go into Task Manager (Ctrl-Alt-Del) and stop the main process there. After doing that, two of my cleanup programs would not work. I uninstalled it, re-started in Safe Mode, did a cleanup (including the Registry), then re-started normally. All seems to be well, but I am going to steer clear of Glary programs from now on.