During FC5t1 install, I selected the finnish keyboard, but the installed (the GUI part) did not honor my choice, but apparently left things at US layout or something. When switching between the virtual consoles, I noticed that the finnish layout was effective in the text consoles though. Note: this is only for the duration of the installation, the keyboard is correct after booting the newly installed box.
*** This bug has been marked as a duplicate of 174218 ***