I did a GREP search (text search within zencart install files)
and found /includes/modules/theme197/product_listing.php
(in default install would be /includes/modules/product_listing.php)
and replaced
PHP Code:
. zen_trunc_string(zen_clean_html(stripslashes(zen_get_products_description($listing->fields['products_id'], $_SESSION['languages_id']))), PRODUCT_LIST_DESCRIPTION) .
with
PHP Code:
. zen_trunc_string(zen_get_products_description($listing->fields['products_id'], $_SESSION['languages_id']), PRODUCT_LIST_DESCRIPTION) .
Thanks that worked