I have since maybe a week nearly the same problem.
Whenever I’m getting at first into the forums I’m already logged in, which means I’m recognized by the software, but in the very same moment, I won’t be recognized at all, whenever I want to switch into my account or into the shop - and I don’t speak of hours or several minutes, but of several seconds up to a minute.
It happens with IE8, IE9 and with Opera, although I’m clearing my browser cache after each (!) session !
I’m not using Firefox and will never do, because it destroyed some time ago several important text files, which nearly couldn’t be recovered (and no, I don’t have any screenshot of it and the support forum of FF was so offensive, because nobody believed me, that I never ever intend to use it again).
It happens as well, whenever I’m starting with the homepage or if I want to go over a link in a mail or in the really very strange looking newsletters (a title, one or two pictures in the wiiiiiide emptiness and at the right side some letters, which seem to belong to a text - I’m really glad, that the pictures are always linked as well) - I always have to try to login several times, before my mail and my password will be accepted ... and it slowly begins to make me somehow mad together with all the other “bugs” of this whole new shop-forum-site-software - and that I can’t reach the support naturally as well !
Under these circumstances it’s really good, that the shop has at the moment nothing, which interests me really. And I can only hope, that the new product of Fisty and Marieah (Gemologica) will be published after all these problems are solved ! Because that’s the only thing, which I really want to have !