Thread:Project:Support desk/Stuck in a 'Read only" mode following Upgrade (1.16.4 - 1.17.0)

I recently moved my wiki from my Windows machine to an Ubuntu (linux) virtual machine. I imported the database tables and the files, ran the upgrade process (via the web) which seems to work fine, but now my wiki is in a sort of "read only" mode: I can view pages, but anything that requires a submission to the server (User log in, Create New User, Edit page), fails and returns you to the original page without any explanation.

The page here says to "Test the Update", but not what to do if that test fails. Any suggestions??

MediaWiki 1.17.0 PHP 	5.3.6 (apache2handler) MySQL 	5.1.56