It might be interesting to compare the checksum of the disk with someone else who has a different machine that shipped with Leopard (it would have to be the same version, i.e. 10.5.2, etc). You can do it by selecting the disk in Disk Utility and going to the "Images" menu, "Checksum" and then "CRC-32 image checksum...". It will take a while to read the whole disk and generate the checksum. Post the results here and hopefully someone else will do the same from another grey Leopard disk [] ]'>