Sorry for the inconvenience. Known Navigation header breakage, its being "rebuilt."
There may be other unforeseen breakage primarily in the handbook portion of the wiki.
The Table Of Contents section of each "PC-BSD® Users Handbook" page may be the best workaround.
Adobe Flash Player preferences/9.2
(Sorry for the inconvenience)
This is an item within the control panel which allows for changes to various configuration settings related to Adobe Flash. Many of the same configurations can be done via right-click within an active flash object in a web browser, or by accessing a special configurations web page.