Hi Guillermo,
In trying to solve my previous Photoswipe vs Fancybox problem I installed a different plugin specifically written for NextGEN Galleries. It made my site faster, which is nice, but it isn't disabled by Photoswipe in mobile browsers.
Also, since Fancybox's z-indexes are quite high, it overlaps Photoswipe. Added to that Photoswipe seems to forget its settings and keeps showing this warning:
Warning: Illegal string offset 'fancybox' in /data/home/koen02/domains/koendewit.com/public_html/wp-content/plugins/photoswipe-for-nextgen-gallery/ngg-photoswipe.php on line 92
> Disable Fancybox
Any ideas what might be causing this? Let me know if I can do something to help and find/fix this.
Here's an example page.
http://wordpress.org/extend/plugins/photoswipe-for-nextgen-gallery/