From: John Refling <johnr@imageworks.com>
> Anyway, getting back to the point, I would like to add an option
> in the kernel which will ignore the console break.  I looked thru
> the source code a long time ago, and didn't see any good way of
> doing this except by commenting out the call to the debugger.
> 
> Any other suggestions???????????
> 

You could count breaks and not enter the debugger unless you get
three of them within 10 seconds.  There is a patch for FreeBSD that
implements this behaviour.  

See below url for patch.

http://www.freebsd.org/cgi/getmsg.cgi?fetch=334108+338742+/usr/local/www/db/text/1999/freebsd-current/19990614.freebsd-current

-adf