Startup Disk Creator (USB-creator) is an official tool to create Live USBs of Ubuntu from the Live CD or from an ISO image. The tool is included by default in all releases after Ubuntu 8.04, and can be installed on Ubuntu 8.04. A KDE frontend was released for Ubuntu 8.10, and is currently included by default in Kubuntu installations. The KDE and Ubuntu frontend go under the names "usb-creator-kde"