I've seen a similar issue, where after I reboot the computer it will boot into the OS on the hard drive, even though the USB stick is still inserted. I believe it is a BIOS issue. In my case, the drive appears in the list of devices on the boot menu as a "USB HDD", whereas on the first boot it appears as a "USB Key".
Fabian, you may want to check if a BIOS update is available for your system. ** Changed in: usb-creator (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/659895 Title: Live USB installation of Ubuntu 10.10 does not boot a second time -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs