I upgraded to beta 2 of 4.5 and have issues with kde starting with an empty session after every reboot or logout/login. It won't save any of the widgets or backgrounds I set and, in fact, I even have to re-add my personal backgrounds again to be able to use them. Also, when I log out the kdm screen buttons don't work, so I can't change window managers or change the password for a new user I create. Any ideas what is causing these problems?

re: widgets & backgrounds see http://forum.kde.org/viewtopic.php?f=67&t=88431, fyi - it appears to solved in what I installed today 4.4.86svn1138650-3.1