I've had the DVD of 10.6 sitting on my desk since September. When it comes to a new OS I don't want to be anywhere near the bleeding edge (currently on 10.5.8). My computer is a Mac Pro purchased last June which came with 10.5.6 pre-installed and have moved to 10.5.8 using software updates. It is rock solid. I will be upgrading when 10.6.3 comes out (DVD to 10.6 and combo to 10.6.3); I will not do a clean install since I have too many apps and reconfiguring would be an enormous hassle. Luckily I use SuperDuper and have two clones of my HD (just in case). Any rumors about when 10.6.3 will be released?