I was working with James and Robert in Live Chat and we've discovered a bug.
Five of my site's pages display a Carousel using NextGen Gallery images, and all use the same supersized background image set in Pagelines > Site Options > Color Control with the supersized option checked. Four of the pages work without issue, but one page will not load the background image in Firefox (v18 OS X). All pages work fine in Chrome (Version 23.0.1271.95 OSX) and Safari (v6.0.2 OS X).
Discovered that turning off the Carousel in the page meta settings on this page only would allow the background image to load. Otherwise, with the Carousel on, here is the result:
A working page in all browsers:
The non-working page when shown in Firefox only:
Looking forward to a fix or ideas on this!
Pagelines V 2.3.6 using Base Theme 1.0.2