Currently I'm using a OS X (10.3.9) "Panther" on my 733 Mhz Power PC G4 "QuickSilver" with 1.5 GB of SDRAM and of late I've been thinking of jumping to "Tiger" - better later than never! But with "Leopard" just around the block and coming on strong wouldn't it better to hold off another 60 days or so and then for go "Tiger" for "Leopard"?