Great thread.
Regarding 1.0.8, I have a clean, new install of both Joomla and CB 1.0 rc2 running this past couple of days.
I cannot cblogin unless I turn Joomla SEF off completely. Once, I am logged in, I can turn on SEF again and everything works fine.
If I logout and try to log back in, I have to turn off SEF to get in again else I get a Page Cannot be Found error due to the following URL call from CBlogin...
www.2ucasino.com/component/option,com_comprofiler/task,login/
Any help appreciated...