Binary package hint: gnome-session
"It seems that you do not have the hardware required to run Unity."
This is misleading, I could have the proper hardware, but wrong drivers. Maybe something like "The graphics system seems unable to run Unity, maybe due to unsupported hardware or driver." could be better.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-session 2.32.1-0ubuntu15
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic i686
Architecture: i386
Date: Sat Mar 12 12:05:57 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110302)
ProcEnviron:
LANGUAGE=it_IT:en
LANG=it_IT.UTF-8
SHELL=/bin/bash
SourcePackage: gnome-session
UpgradeStatus: Upgraded to natty on 2011-03-09 (3 days ago)
There is more discussion on this at bug 712091. Could possibly mark this as a duplicate of that one.