WP 2.7
As WordPress has been updated to 2.7 and most of the plugins are disabled by default, you should first enable qtranslate.
When you edit a page or a post, there is a notice, that your qtranslate is still not compatible to the current version of WordPress. You can ignore that, just use that, what WinAllPoker said:
– download qtranslate_wphacks.php from your webserver
(located within wp-content/plugins directory)
– open this file
– edit the following line
if($GLOBALS['wp_version']!="2.6.5")
into
if($GLOBALS['wp_version']!="2.7")
– upload your modified file
Your WordPress Editor should instantly work with qTranslate.