I just tried downloading the flickr plugin. The wiki page http://typosphere.org/wiki/typo/Finding_Typo_Plugins says it is located at:

http://svn.typosphere.org/typo/plugins/flickr_sidebar

But it looks like it is actually located at:

http://svn.typosphere.org/plugins/flickr_sidebar

I assume that all official plugins where moved and need their location updated on that wiki page as well.

$ svn export http://svn.typosphere.org/typo/plugins/flickr_sidebar
svn: PROPFIND request failed on '/typo'
svn: PROPFIND of '/typo': 301 Moved Permanently (http://svn.typosphere.org)
$ svn export http://svn.typosphere.org/plugins/flickr_sidebar
A    flickr_sidebar
A    flickr_sidebar/test
A    flickr_sidebar/test/flickr_sidebar_test.rb
A    flickr_sidebar/Rakefile
A    flickr_sidebar/init.rb
A    flickr_sidebar/lib
A    flickr_sidebar/lib/flickr_sidebar.rb
A    flickr_sidebar/lib/flickr.rb
A    flickr_sidebar/views
A    flickr_sidebar/views/content.rhtml
Exported revision 17.