FYI: this boots into gnome3shell as CD
sugar-desktop can be installed after install to HD or USB (both work).
VirtualBox4.0.4 OSX defaults to fallback gnome2.xxx
http://alt.fedoraproject.org/pub/alt/nightly-composes/desktop/desktop-i38...
also installs to 8 GB USB
DO NOT UPDATE rsyslogd 5.7.9-1 fc15 doing so will make the system not login
see
http://wiki.sugarlabs.org/go/Community/Distributions/Fedora#Make_Bootable...
look at notes
115 updates as of 5AM PDT -1(rsyslogd 5.7.9-1 fc15)
Tom Gilliard
satellit on #sugar freenode IRC