There is only one issue as far as I know: The last image on page some times is not loaded. This affects the optical last image not the last image in the source code. Maybe you can see it on my photoblog.
I’ve seen this issue at the frontpage of the blog with Firefox 14.0.1 on Mac OS X 10.6.8.
I could reproduce it today if I scroll down quickly to see the pictures loading. Here you will find a screenshot.