Hi, I am trying to boot Ubuntu 9.04rc-amd64 via liveCD (USB stick) on a Lenovo X200 laptop. Unfortunately, I cannot boot Ubuntu. I have been able to boot Ubuntu 8.10-amd64 using an exact similar method. I have used usb-creator to prep a USB stick, which I used for both 9.04RC as well as 8.10. Where do I report this problem. The problem with 9.04RC: Soon (just a few seconds) after the progress bar appears, I am taken to a screen with a initramfs prompt. On trying to reboot, not using apcioff in the kernel options, the progress bar appears for a longer period, but I again get a initramfs prompt. This time I have additional error messages: [107.116068] usb 1-6: device not accepting address 10, error -110 [107.116115] hub 1-0:1.0: unable to enumerate USB device on port 6 Thanks for your help. Saurav