Kaldurenik: Try this:
Go to the launcher. Open options / keybindings and then restore to default.
After that exit the launcher and then open the game.
See if it work. If it dont well...
Then i guess you could try to change the keyboard layout by pressing ctrl shift (or was it shift ctrl) while in the game to see if that fix it (it probably wont but you never know).
Since it wasn't a layout problem, I ended up just hitting Ctrl + Alt + Del and rebooting the computer.