Following version 0.6 just four days ago, a new version of xPUD was released today, boasting "same features, 20% smaller": "
xPUD is a small and fast booting LiveUSB, usually boots into X within 15-seconds,
and starts an easy-to-use UI as soon as possible. Being a Ubuntu derivative with APT/dpkg system, the rootfs is quite small: only 67MB of core image, including Ubuntu 8.04 compatible kernel, Xvesa as xserver, web browser (firefox), media player (mplayer) and input method (scim).