Voting starts in March for the Drupal Association Board election.
1) using an imagefield field, upload a jpg to a node with a name that includes '+' in the title (ie, black+white.jpg)
2) attempt to view that image via imagecache wherever you are using it
note: imagecache generates an error that it cannot find the file with the name. if you change the '+' to an underscore or something else, imagecache works as expected.