Please, replace all itemtype elements from http://data-vocabulary.org/ to http://schema.org. On the main page I found that only breadcrumb is used (should be changed to BreadcrumbList) but perhaps there are other usages, too.

Data-vocabulary.org wrote:

Since June 2011, several major search engines have been collaborating on a new common data vocabulary called schema.org.

See the schema.org blog for the latest news, and schema.org and FAQ for full details.