Thats a bit of a dilemma. Maybe do what a work colleague of mine is doing, he just bought a cheap PC notebook and is going to take it back and then buy a Mac after the time has expired I think its like 14 days or something but can't really remember. I kinda wish they had a trade in service as I only bought my Macbook Pro a month ago. Ah well, its only .2GHz of processor speed and multi-touch trackpad, sure I can live without out....OR CAN I

Thanks, I like writing reviews, kinda sad like that. Going to eventually start on my review of Leopard and all the apps I use and go from there. Probably see the linux comparison from you then. Always been curious about linux so would be great to see some more info about it

You can try out Ubuntu 64bit on your Macbook pretty easily.

1. Create a partition using bootcamp, 10-30 gigs or so.

2. Download the install image:
http://releases.ubuntu.com/7.10/ubuntu-7.10-desktop-amd64.iso

3. Burn to CD.

4. Boot the CD. I recommend running the check media option before actually installing.

5. Load the live CD. Ubuntu will actually run from CD but will be slow of course.

6. If you want to install it is pretty straight forward. During partitioning, you'd want to install on the largest free contiguous space.

7. Enjoy.

Here is a great tutorial here that is quite detailed and illustrated:
http://howtoforge.com/the_perfect_desktop_ubuntu_gutsy_gibbon

There is so much I love about Linux. Even the minor touches are great. Ubuntu is by far the best OS I have used, and I've used Windows and OSX extensively. Not a bad idea to try it out and start learning.