i have a silver intel imac that i've been running tiger on for the past 4 years. i also have an intel mini. the mini came with 10.5, so i figured i'd finally semi-update the imac so that it'd be the same OS (10.5) as the mini. so...i went to install and it tells me that it "cannot be installed on this computer". what i don't get is the fact that the imac meets every single system requirement that is specified in the instructions on the 10.5 install disk, line for line. i double checked, and then checked yet again. made another attempt and got the same message. it will boot from the disk, but as soon as i select my language, i get the dreaded "can't install" message. ideas?