I also hate BSOD crashes. If you believe that it is happening when a scan is being performed, please contact support.
How to reach support (FAQ) - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=2421771&SiteID=2
They can check for conflicting programs or processes and the data logged at the crash may identify the cause.
The crash can be due to a corrupt file, hardware issues, a driver, or a conflicting program.
-steve