in IE webshop is correct in firefox and safari not

[Heidjuh]

Dear reader,

Hope to get an answer or solution soon!
We have a problem; the webshop in IE updates correctly shows all my changes as I made them in CMS and updates my copied (and changed products)

tough.. in firefox and safari (didn't check any other browsers jet) it is not correct.. all my copied items are the same.. not the name of the product but small and large discription didn't update.. also the language on the page.. is changed to Dutch.. in IE it is.. in firefox and safari it's mixed..

What did I do wrong..? And how can I update this as soon as possible?

thanks for your answers!

(webshop is ; www.allesvoorjetaartje.nl find the differnces.. if you open several kinds of browsers )