[Plugin: Sociable] urlencoding twice?

i’ve added

<?php if (function_exists(‘sociable_html’)) {
echo sociable_html();
} ?>

to my wordpress template and everything is alright – except for the malformed urls like

https://delicious.com/post?url=http%3A%2F%2Fwww.example.com&title=Home&#8221; title=”del.icio.us

note the strange slashes..

in the code of the plugin (social.php) the parameters are urlencoded e.g.

$permalink = urlencode(get_permalink($post->ID));

do we have some kind of double url encoding here? in the plugin AND in wordpress?
how can i get wellformed urls?