I just wonder that in the WP install guide not mentioned this common situation – when the FTP user’s group don’t match the server’s user’s group.
Am I right that if the FTP user and the server user are in different group, the flag for the /uploads should be 777, otherwise enough 775. (BTW in the uploads folder the WP script generates folders/files with 777/666 permission.)
Any other folder/file should be writable by the running WP scipt?