If the scan hangs at 59% complete, cancel the scan, check your hard disc for errors -
http://support.microsoft.com/kb/315265 then retry the scan. If the scan freezes again please contact support. How to reach support -
http://social.microsoft.com/Forums/en-US/onecareinstallandactivate/thread/30400b52-7f26-4ba0-bc18-17e305329d90
Jim - MVP Windows Live - Forum Moderator - Live One Care - Live Mesh - Microsoft Security Essentials