Comment 19 for bug 1305335

@whoop: If you mean that the thumbnail file length is correct but the image file is zero bytes, the reason is that the thumbnail file isn't copied from the non-ecryptfs folder to the ecryptfs folder. Instead, the system stores thumbnails in ~/.cache/thumbnails. So it creates a new thumbnail file for the newly-copied zero-byte image file in the ecryptfs folder, meaning the thumbnail file itself is valid. But the system tries to generate the thumbnail image from the zero-byte image file, which means that the thumbnail image is broken and so it appears broken in nautilus.