This is my consumer, old, 2002, Mac: iBook G3 600MHz, 384MB SDRAM PC100 OS-X runs slow, and sometimes takes five minutes to boot. Once it's up it runs some apps fine, but others slow. I use Camino because Firefox crashes and freezes the system. QuickTime 7 crashes and freezes the system too - when it's the only app (besides Finder) running. however most other applications run fine - like iTunes, Transmission, Aduim, BBEdit, Photoshop CS. So, I sent and received an Ubuntu Linux live and install CD. Surprisingly the Ubuntu OS runs fast from the CD, and the iBook is more than enough machine to run apps like GIMP, Firefox, et cetera. However what is going to play my vast library of MPEG-4 (.mp4) movies in Linux? Will AAC audio files play in Linux? The sound works fine, and there's no video issues. Is there Flash player for Linux, it kind of irritating not being able to watch movies on YouTube. Can anyone here help me with a transition Mac to Ubuntu? I am asking the same questions in the Ubuntu forums. OS-X is great if you have an Intel dual dual-core Xeon or Core 2 Duo or G5, but a G3 straight sucks ass with OS-X.