Hi Michael,

Here is my short test with:
Mac OS X V 10.6.8

20" iMac ( 1680 x 1050 )
2 GHz Intel Core Duo
2 GB RAM ( I cannot upgrade, 2 GB was the limit with the first iMac`s)
ATI Radeon X1600 128 MB
(This iMac was bought Jun. 2006, one of the first iMac`s, a grandpa :-)

Download & Installation = without problems
Licensing = without problems

First impression = Great!