See http://en.wikisource.org/wiki/United_States_v._Windsor: The links under "Court Documents" aren't working for me. (As in, your cursor doesn't change when you go over them, and clicking does nothing.) Brought it up on IRC and they aren't working for Ariel either. However, http://en.wikisource.org/wiki/United_States_v._Detroit_Timber_%26_Lumber_Company and http://en.wikisource.org/wiki/User:PinkAmpersand/bugtest are working fine... but the TOC in http://en.wikisource.org/wiki/COTUS isn't.
In both cases where they're not working, they work while the page loads, but then stop working once it's completed loading. This is the case for me on both Chrome on my Chromebook and Firefox on my PC, and when I tried with IE on my PC, I got the even stranger result of the links working, but the "this page does not exist" messages being in Greek (presumably some strange result of Ariel having purged the page).