For non-members (not logged in) comment out _feedback.php line 246:

$Form->text( 'o', $comment_author_url, 40, T_('Site/Url'), T_('Your URL will be displayed.'), 100, 'bComment' );

For members (logged in) comment our line 210:

$comment_author_url = $preview_Comment->author_url;

.

This should do the trick, but you're the tester, I have a 1.10 blog with some alterations that prevent me from trying before I post here.

There is something to say about the _feedback.php. If you store it in the /skins/ folder, then it's the general (fallback) file. If you place it in the folder of the skin, that one shall be used instead. This provides you maximal flexibility.

Good luck

Works perfectly :-)

Thanks !