Last modified: 2012-11-06 23:48:09 UTC
http://www.mediawiki.org/wiki/Special:ExtensionDistributor throws the following error no matter which Extension you attempt to download: Invalid response from Extension Distributor remote client. Possibly similar to: https://bugzilla.wikimedia.org/show_bug.cgi?id=17646
I can confirm this.
*** This bug has been marked as a duplicate of bug 41081 ***