Snow Leopard is here, so I thought I would install on a few machines to get a feel for the issues/problems before trying to deploy.
Two out of the five machines I tried would not allow the install to take place. Curious indeed, as all machines were pretty much identical, or so I thought. After going through my notes, I realized that these two machines had Boot Camp installed ages ago, so a partition had been added and then removed.
As such, the partition map was not allowing the install. To correct this, I used Disk Utility. I highlighted the main boot drive, clicked on the Partition tab, and then moved the partition line and moved it back to its original size. I then clicked Apply, and effectively the partition map was rewritten.
After that, the installs worked as expected.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20090831045130555