login screen is stripped from all buttons ! totally weird...

i enter the game, and i see the into animation+sound of the selekton dragon coming with the music and everything. (i am on Wotlk Expantion)

but there is 0 buttons at the login screen: everything is gone - the box where you put user name and password, the buttons and so on. - everything !


i have tried to delete interface and WTF files: didn't work.
i have tried to delete addons: didn't work.
tried to download everything: and torrent run on my file and told me there is nothing missing.


what should i do ? i am stuck..