Move ‘Add to Cart’ Block Before Configurable Product Options in Magento

Most likely it is the FPC that is sticky and not the block.

Pricing should be hole punched by default for the FPC if you are using a default theme.

I would recommend reviewing your theme/template in more detail. To help facilitate this AOE_TemplateHints is great at identifying blocks that are being cached or not.

Try this instead, NOTE, the </s> will pass a null value, as 0 will mean cache forever.

<block type="catalog/product_price_template" name="catalog_product_price_template" >
         <action method="setCacheLifetime"><s>null</s></action>
        </block>

References:

• https://magento.stackexchange.com/a/3134/69
• Cache problem - prevent my module block to be cached

It's a problem with method aliasing in subclasses.

tl;dr

For version CE 1.9.1.0 you can try to patch app/code/core/Mage/SalesRule/Model/Rule/Condition/Product/Combine.php at line #219 turning

$valid = $children && $this->validate($children[0]);

into

$valid = $children && self::validate($children[0]);

For other versions, find the above line inside the validate method.

Explanation

Mage_SalesRule_Model_Rule_Condition_Product_Subselect::validate() overrides the Mage_SalesRule_Model_Rule_Condition_Product_Combine::validate() and calls the parent implementation along the way. Too bad the latter eventually tries to call itself when met with rule validation on configurable products, but ends up calling the overriden implementation instead, so an infinite loop is started.

Warning

The quick fix proposed is consistent with the core SalesRule models but might break more complex class hyerarchies introduced by third party modules.