Apple has release the 10.5.2 update for Leopard and it looks to be a doozy. Added functionality to stacks and added the ability to kill the transparency in the menu bar (yay) and a ton of other updates. You can check them out HERE.
I'll be updating the Laptop first so that I can check to see that there is no impact to FCS. I will post my findings here in the next day or so. in the mean time, HOLD OFF ON YOUR UPDATE!
The Laptop is my experimenter machine - Let's see if they have broken anything significant.