After formatting, vista took 1 hour and 15 minutes to install. It listed file load times in %. I turned the monitor off, and returned about 1 hour later, and it had finished.
This is so weird because when I installed all of the Vista Betas and RC's it barely took 25 min from boot to install disk to boot to desktop. Wonder what is going on...
Edit:
Can you tell if the hard drive or optical drive are being read? Can you be a little more detailed besides saying the progress bar doesn't move. The more detail you give the more likely someone can help you.