my situation is as follows:

i have a video gallery from youtube.
these videos are assigned into a season.

on the page - one can change the season and a new set of videos will come up.

thumbnails -> lightbox using the views lightbox trigger.

so far everything works fine.

the problem is that once the videos are loaded through an ajax call - they don't show up in the lightbox.
before the ajax call they do.

what i noticed is that in the file:
lightbox2_handler_field_lightbox2.inc

function render(){}

static $i;
gets restarted for each ajax call and the lightbox tries to load the content of the previous video.

the javascript is not binding the new id. it's looking for the old .lightbox-popup with the previous id.

hope this is clear (kind of sure it's not... but that's my best..)