We have installed varnish on our server today to speed up our webshop. And it is very effective. We use W3 Total Cache configured with MaxCDN and Redis to manage the cache in WordPress. But some pages on our shop now are printed twice in the browser (in the source it contains 2 tags) and all scripts are loaded twice, which slows down the site on that pages.
Has anybody experience with this problem, or an idea how to solve this?