Ok here is your error
Code:
2010/07/27 21:33:18 [error] 565#0: *17 open() "/var/www/immortalguild/html/uploads/2/2/6/2/9319.attach" failed (2: No such file or directory), client: 68.194.193.123, server: immortal-guild.net, request: "GET /attachment.php?attachmentid=9334&d=1279589679 HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "immortal-guild.net", referrer: "http://immortal-guild.net/threads/49537-Slippy"
My path to attachments is /uploads
CDN is at
http://attachment.immortal-guild.net
The physical directory is /var/www/immortalguild/attachment/uploads
The physical web directory is /var/www/immortalguild/html
So it seems your mod isnt using the CDN URL with X-Accel-Redirect. Hopefully you can fix this. :-)