Visiting a forum post when logged in seems to produce different results to when not logged in.
For example: http://moodle.org/mod/forum/discuss.php?d=162045
When logged out is:
Home ? Courses ? Community Discussion (in English) ? Using Moodle ? Moodle performance testing: 1.9 vs. 2.0
And logged in is:
Home ? My courses ? Using Moodle ? Getting started ? Hardware and Performance ? Moodle performance testing: 1.9 vs. 2.0
(Not sure if this a bug or not)