I'm having similar problems, but mine are worse. I can't login the main Daz website to buy something or even look at my wishlist. I can still browse the site, but I can't login. I can go to the forums and post, though.

Try as I might, I've tried logging in, logging out, both on the Daz main site and the forums. I have tried clearing my cashe, my cookies, nothing works.

Someone mentioned on the DAZ forums that she got Chrome for her browser and hasn't had a problem since. No idea how to get that.