it froze in the middle of a scheduled scan. UI didn't freeze, just the scanner seemed stuck somewhere in the program data folder, with intense hard disk activity. I clicked on pause, didn't seem to have any effect, clicked on stop, no effect either, minimized the app to sys tray and when I restored it the scan was finally interrupted with the start button available again. I got a dump file. Sending it to FTP with password sent through mail to Vlk.