Test fails inconsistently in various browsers

Test has been seen failing in Firefox and IE9.

Unhelpful details from the browser:

Died on test #3 @http://localhost/javascriptmvc/jquerypp/dom/compare/compare_test.js:5 @http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:1575 ConfigManager.defaults.types.fn@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:1328 require@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:1244 ConfigManager.prototype.require@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:1216 moduleManager/<.execute@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:1839 whenEach/<@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:378 .exec/<@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:362 h.each@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:41 .exec@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:361 resolveFunc/<@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:301 .resolve@http://localhost/javascriptmvc/steal/steal.js?jquerypp/test:354 Deferred.when/