Please update:
ojo 0.4.3 is now available to download<http://download.dojotoolkit.org/release-0.4.3/dojo-0.4.3-ajax.tar.gz>. This is a security release. Dojo 0.4.1 and 0.4.2 users are strongly recommended to upgrade as soon as possible. 0.4.1 and 0.4.2 have a flaw in two files that could allow cross site scripting (XSS) attacks against your site if you do not upgrade.