I've a weird problem with Magento. I'm not able to upload any new product images. In my Nginx error log I am seeing a 403 error for the image when uploading. The strange thing is that the images are actually in TMP folder, but they are not showing up in the admin. Another strange thing is that the older images are showing up for all the products. I've checked all my file permissions and ownership, but nothing is working.
What is wrong?