The first image is imported inside the swf so you don't need to wait for the first image to load.
All other images are loaded from a external image file.
What may happend is that there were some problem loading the image and for that reason, the script was running the same image more than once.
It has 12 different pictures and 12 "different" levels (more pieces). After lvl 12 no high score or statistics are submitted.
Anyways, thanks for your comments. That was my first game here.
 "Sliding Puzzle"){kind=icon}