Hi out there,
I installed Tikiwiki 1.8.1 on a mainframe linux (Kernel 2.4.21, Apache 1.3.26, PHP 4.2.2, MySQL 3.23.52).
In php.ini I adjusted the memory limit to 32M for seeing anything.
Now, after initially login in as admin/admin, I am forced to update the password.
After updating the password the error message "Sea Surfing (CSRF) detected. Operation blocked." is diplayed.
Tested with Mozilla 1.5 and IE 6.0 (Windows) and also with Konqueror 3.2.0 and Mozilla 1.4 (Linux).
Cookies were enabled in all browsers.