I have not stopped watched this and this might sound completely screwy. But to use P7 under OSX 10.5 you have to uncheck render as a seperate process under preferences per a notice on the EF website. I did that and for a static scene it seems (seems is used an a adjective not a stop watch comparison) to render faster then when use a seperate process was checked under 10.4. Reading the manual it would seem to lead you to believe it would be the reverse. What would be inteteresting is for someone still using 10.4 to do a stop watch comparison of the two different render methods. I have quad intel but have 8 gigs of ram compared to your 2. Mac's have always loved ram and it "seems" to me the intel quad is no different.

Gary

"Those who lose themselves in a passion lose less than those who lose their passion"