[Plugin: Lightbox] Works on some images, doesn’t on some others

hey all,

on the same contiguous blog, most of my images are being displayed correclty with lightbox but only one post does not show them correctly, it will show the pictures without the lightbox effect.

I’ve been playing with different plugins, automatic “rel=” functions, unloading and reloading images but nothing works.

I’ve compared source codes of working images vs. non-working images and there is NO difference other than the [rel #] for the current post.

Here is one of the working post:
http://simboo.ca/japon/?p=149

Here is the post that does not work:
http://simboo.ca/japon/?p=112

I’m not even sure wether it’s a lightbox problem or a html/wordpress bug.

thanks for helping
Simon