[Mgs] Spring washers don't work !

[strovato at optonline.net (Steven Trovato)]

Check out this video also:

http://www.youtube.com/watch?v=LdSZGu41mf0

It is from a company pitching their locking system.  If you accept 
their testing, then pretty much every kind of locking mechanism 
(except theirs) is ineffective!  I don't know, maybe that's true.  I 
guess the thing I'd like to know is how well the test represents the 
real world.

-Steve