Hi!

I've got a serious problem
I cannot log in anymore to my website.
I'm using CB 1.2 and Joomla 1.5.9 .
When I enter the data to the log in form and click on log in, I come right back to the front page and nothing has happened. The same at the login to the backend.
Has somebody an idea?

I've cleared the session-table and deleted all my cookies. But the problem is the same with firefox (windows/linux) and ie8 (windows), ie7 (windows server).

I don't want to completely reinstall the website...

thanks a lot for your help
Aljoscha