I just upgraded an old iMac G4 from Tiger to Leopard. The install didn't report any problems, but I'm finding that there are missing files. For example, the following directories and files are missing (checked against com.apple.pkg.BaseSystem): private/etc/mach_init_per_user.d usr/bin/gnutar usr/bin/tar I checked my MacBook Pro, and those files are present on that machine. I can restore the missing files from the original BaseSystem.pkg file -- but does anyone know how those files turned up missing? Has anyone else seen this before?