Same problem here. Running adwcleaner_6.046.exe on Windows 7 SP1. Have used the program a handful of times successfully in the last week. Now, when I try to run it, the program apparently launches in the background but I do not have the User Interface and cannot execute anything. The task manager shows it as a running process only, taking up 9,940K memory. I am running on an administrator profile and have double-clicked the .exe to "RUN AS ADMINISTRATOR" - if I try to click the .exe again I get a warning "AdwCleaner is already running!" I wanted to uninstall the application and re-install but I do not see a PROGRAM NAME in the uninstall list, assuming it just runs as an executable without installing itself, Extremely frustrating, please advise. Thank you.