Image in production mode + nginx missed half page

Hi Guys,

I’ve updated my images with 715x500.

It works fine in my frontpage in development mode.

However, when I deploy to my production server (Nginx+thin+Rails), the
image cannot be displayed perfectly, only around 30% of it displayed.

I have tried to type the image url directly and same results.

No use even after I restarted the projects and Nginx.

The image is correct, I have tried to down it from server via ssh.

Any clue?