I just finished installing from the LiveCD, and whenever I tried to boot I got this message:
Starting up ...
[17179569.184000] ACPI: Unable to locate RDSP
[28005.474579] PCI: Cannot allocate resource region 0 of device 0000:00:03.0
... and Ubuntu would not boot.
I had originally set Parallels to install off of the LiveCD ISO, and the VM was still set to use this file as the source for the CD-ROM drive. After editing the VM configuration to set it back to its default, everything works great.
Just thought I'd post this so anyone madly searching the LQ forums (or google, since this board is indexed by them) who is experiencing the same problem, can hopefully find a solution.