My 1st year breeding and so far I've had good locks every time I've paired a male and female up.
Here are 2 of the locks I managed to get photo's of.
Male Butter x Female Spider
http://i4.photobucket.com/albums/y10...G_3074copy.jpg
Male Bumblebee x Female Butter (hoping for some queen bees).
http://i4.photobucket.com/albums/y10...G_3099copy.jpg