ability to disable post display information on specific content types

In order to display post-time display information per node type, you could add a simple if scenario in node.tpl.php and exclude your desired node types

<?php if ($node->type!='page'): ?>

<div class="post-time">
<b><?php print format_date($node->created, 'custom', "j"); ?></b>
<div><?php print format_date($node->created, 'custom', "M"); ?>
<?php print format_date($node->created, 'custom', " Y"); ?></div>
</div>

<?php endif; ?>

Yes, you can also you make the following change in node.tpl.php

<?php if ($submitted): ?>
<div class="post-time">
<b><?php print format_date($node->created, 'custom', "j"); ?></b>
<div><?php print format_date($node->created, 'custom', "M"); ?><?php print format_date($node->created, 'custom', " Y"); ?></div>
</div>
<?php endif; ?>

This behavior per content type controled by $submitted variable. I have attached the appropriate patchThemeConf20110111.txt file.