I'm having an issue when editing products that have children. If a child product's name has the inch symbol (") in it, editing the parent will truncate the child product's name at the inch symbol position. I temporarily fixed this by adding the following code to the file administrator/components/com_virtuemart/views/product/tmpl/product_edit_information.php at the line 362
$child->product_name = preg_replace("/\"/",""",$child->product_name);
I'm using VM 2.0.8e and Joomla 2.5.6