Redmine

I installed Redmine and run it in Apache2 with the Passenger module. Apache2 boots, Passenger module gets loaded and the Redmine welcome page is shown, however when trying to login or navigate to other parts of the Redmine site, the browser keeps loading and loading and loading forever, although the Redmine production.log indicates redirects and HTTP 200 codes in the header, so everything seems to work correctly according to the log. I tested in various browsers.

Does anyone have an idea what could be wrong?

I posted snippets of logs already on ServerFault.com and will place a link to this here if this is allowed for the sake of avoiding duplication:
http://serverfault.com/questions/233480/redmine-on-apache2-with-passenger-issue

Many thanks!