my site www.caviarofswitzerlandshop.com doesn't save any changes made in backend administration and the checkout/cart functionality is wrong. You don't see the products you add, you can edit the products in the cart. Strange.
do you mean you don't see new products in frontend or backend? if frontend, it wold be a cache issue, if backend, you want to check db querys and db status, maybe your magento didn't issue the 'commit' command after insert products
