This is driving me crazy. I changed hosts and imported my WordPress site. Everything works perfectly except an issue with images that are in the uploads folder, but not in the media library. WP Flash Uploader seemed like the perfect solution. However, when I try to sync the media library, I get an Apache error. No matter what I do, it's an error. Upon researching it, I've found that I need to edit my php.ini file to lengthen the time before it times out, but I didn't have access to it, so I followed instructions and made one. That didn't work. If you're on a cheap server and can't modify things easily, this will just be a pain. If anyone knows of an easy way to get it to work without it timing out, I would be so happy to know about it!