Bought a Mid-2009 13" MBP for converting 8mm and Digital8 home movies to DVD. I originally planned on just using 10.6.8 but it would be nice to have iMessage on the machine. What is the newest Mac OS that will smoothly run iDVD and iMovie HD (iMovie 6) without any kind of hacks? I'll be doing a clean install of the OS and have the iLife '09 DVD. Thanks!