When a program or the operating system hangs or crashes, Windows 7 sends an
error report to Microsoft by default. It will also spend time looking for a
solution. (In my experience, it never seems to find one.) If you find the
error messages and the delay in closing down a hung application annoying or
have concerns about privacy, you can turn off error reporting. Here's how you
do it:
http://www.techsupportalert.com/content/how-disable-error-reporting-windows-7.htm
