I replaced my gnu/linux debian on my ibook because Macromedia insists not givin us a flash plugin.
The most important miss on the change was the multiple desktops, solved with the "Desktop Manager". And why we have thousands desktops if we needs to travel trought them to change a song ?
I've instaled another program that requires a mouse intervation. Beautiful program, but not so usable for developers and sysadmins people.
So, I found TuneKeys.
My productivity grew a lot using it and I have helped by developers as quickly as internet can be.
Now I need a free screen locker, like xtrlock, do you have one ?