John Yu wrote:
Doesn't v1.4 has a new feature to use a flat directory for file uploading?
Yes it does:
you can disable the subdivision and let all files go into one place. (This is not supported on 1.3 unless you backport the change; it is available in 1.4beta.) To skip turn it off, set $wgHashedUploadDirectory = false in your LocalSettings.php.
-- brion vibber (brion @ pobox.com)