Hello, I use Colorbox since a few month and with the 3.4.2 Version of WP everything worked fine for me.
But after updating WP to 3.5 the plugin don't set the "cboxElement" class to the -Tags in a new gallery.
<dt class="gallery-icon"> <a class="cboxElement" href="h......</a> </dt>
In the <img>-Tag the class "colorbox-xxx" is already set. This means, if I click on a gallery thumbnail, it don't open the colorbox. Instead the image shows on a new WP site and if I then click on that image, colorbox opens.