The SlideShare application on XING (http://www.xing.com/) has been discontinued from June 1st, 2011.

If you were using the SlideShare app on XING and your XING app was synced to your SlideShare account, then all your XING uploads will show up on SlideShare and will not have lost any content. However if you were using the XING app on a standalone basis (i.e. without syncing it to SlideShare) the uploaded content will no longer be available.