User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b1) Gecko/2007110904 Firefox/3.0b1 Build Identifier: Firefox/3.0b1 After upgrading from Firefox 2 to Firefox 3 Beta 1, it ran into problems loading yahoo mail. Browser timed out and displayed two yahoo mail error messages Message 1: Yahoo! Mail experienced a login error: name: NS_ERROR_DOM_WRONG_DOCUMENT_ERR message: node cannot be used in a document other than the one in which it was created. lineNumber: 463 Message 2: Yahoo! Mail experienced a login error: name: TypeError message: m has no properties line number: 647 fileName: http://mail.yahoo.com/us.js.yimg.com/combo?/pim/r/dclient/g/js/core/773fae886e115cd778a8a2a00201865_1.js&/pim/r/dclient/js/launch/883cf0597362b891f552a0385f35c078_1.js Reproducible: Always Steps to Reproduce: 1. Start firefox 2. Type "http://mail.yahoo.com" Note: Prior to upgrading to the beta, i stayed logged into yahoo mail.

Please read http://www.mozilla.com/en-US/firefox/3.0b1/releasenotes/#issues before filing bugs against Firefox 3 beta 1.