Digg icon is now loading in Sociable

Hey Folks.

I just upgrade to the latest sociable, here it is: https://www.PUMATALK.com/blog

all icons are loading except the DIGG… here’s the code i have in the sociable.php

'Digg' => Array(
		'favicon' => 'digg.png',
		'url' => 'https://digg.com/submit?phase=2&url=PERMALINK&title=TITLE',
		'description' => 'Digg',

and here’s the link:
https://www.pumatalk.com/blog/wp-content/plugins/sociable/images/digg.png

Any suggestions?
-Joey