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.
Changes related to "Package Manager/9.2/en"
26 January 2015
N b 03:22PC-BSD® Users Handbook/9.2/en (diff; hist; +592) FuzzyBot (Importing a new version from external source)
03:13(Deletion log) FuzzyBot deleted page PC-BSD® Users Handbook/9.2/en (Part of translatable page "PC-BSD® Users Handbook/9.2".)