Just installed it today. Had trouble at first, got several errors. Searched for hours, a lot of people had the "8007327017" error. The solution seemed to be that you can only install it from a DVD-ROM, and it is recommended to burn the .iso at a very low speed. My laptop only has a DVD-RW, so I had to download isobuster and install it from there.
The trouble was totally worth it, I love the new design and effects, it runs veeeeeeery smooth (P4 3.2 Gs, 2 Gs RAM), no problems with drivers or software (Photoshop, Illustrator, Office 2003, Firefox, Nero, iTunes and some games everything worked