Hello. I currently have a LaCie 1TB Neil Poulton drive with Firewire 400, USB 2.0, and eSATA. I have being connecting my MacBook to the drive via Firewire and backing up as I see necessary. I just got a new MacBook (without Firewire). Question 1) Can two machines back up to the same drive? (not at once) Question 2) Will Time Machine allow backup from one Firewire source and one USB source (again, not at the same time) Thanks much in advance!