9.04 is not supported, so I wouldn't use that. Use either 12.04 LTS or 13.04.
What I would do is go into the grub boot menu, edit the Ubuntu entry, and find these two words:
Change them to say this:
What this will do is show the usual scrolling text that is normally hidden by the splash screen. If you see anything odd (such as a kernel panic) or see it stopping at a certain point, you can post it here.