I have upgraded to 10.6.1 and am generally very pleased. The installation was flawless, including the update to 10.6.1. My one complaint is that Preview has lost some functionality. The range of color adjustments I had in 10.5.8 were so good I normally didn't need to use GIMP or other photo editing program. Specifically, I could adjust the white and black levels as well as brightness and contrast. In Snow Leopard, they seem to have eliminated those two controls. Is it possible to somehow install the old version of Preview in SL? I have the original 10.5 CD, but haven't been able to find a way to only install Preview. Thanks for any tips. Apple, are you listening?