I don't have an issue with Fancybox doing a nice job with the pop-up(s) gallery but I do have an issue on the gallery images on my blog post when I set the gallery columns to anything other than 2.
Here is a test page on my Photo blog with the gallery column set to 3 - http://unsunburnt.com/test-fancybox-page/
You should see the gallery image on the page all overlapping each other.
My initial thought was, this overlapping images has to do something with the width/wrap setting on the blog post. So tried bumping up the width to 1000+ with no luck.
Any thoughts on how this could be fixed?
Great plugin btw.
Cheers!