I have some problems with the parallax effect and have also read various threats about it: Images and thumbnails are displaced after scrolling down faster or after going back with the browser "return" option.
My site has a very long index site with a lot of project thumbnails (some with parallal effect). When I open a project and go back, the project thumbnails are all over the place, especially when reaching the bottom of the site:
Pics: Before and after clicking on the project thumbnail (the Rihanna drawing).
Are you still working on that bug or do you have any news / advice?