I've searched the forum and it seems like people were having a similar problem on 8.04... you boot from the liveCD (not install), and it pulls up the login screen asking for username and password.
people suggested (where _ means entering nothing as the password):
i've tried every combination of these, including capitalizing the first letters... no luck
i've checked the disk for errors, no errors were found
i'd really like to boot into the live version so that i can play around, please help me.