Please everybody delete the yeppie - cookies from your harddisk.
You will find them in documents and settings -> your name folder -> cookies. "yeppie" is part of the cookie name.
Another way to delete (all) cookies is in your browser - for ie7 in: extras -> internet options -> browser history (? Browserverlauf in german ie) delete -> delete cookies
I changed the cookie name in an attempt to get rid off some login problems.
Thanks