I am not sure if this is a bug or not but the error below is filling up our error log like crazy. Our db was recently upgraded to MYSQL 5.0+ so I am not sure if this related.

PHP Warning: Variable passed to each() is not an array or object in /var/www/html/includes/classes/shopping_cart.php on line 1708

Line 1708 reads:
PHP Code:
while ( list( $key, $val ) = each($_POST['products_id']) ) {