Re: Tikipedia "login" bar missing
The login link is in the Top bar section of the page, and apparently this is turned off for some parts of your site. On the Admin Features page (tiki-admin.php?page=features), down at the bottom, make sure that the "Top bar" box is checked, and if "Layout per section" is checked, make sure "Top bar" is turned on in all sections, if you want it to show.
-- Gary