I have an old G4 iBook that have been living in a closet for the last years. I suddenly needed an extra work station and thought it might work well with some kind of open source distro. Specs are on the low side; 1.42GHz Ram, 512MB RAM and 60GB HD. I found a low priced battery replacement and the old thing booted fine with a light version of Ubuntu (lubuntu 12.04). Everything seems to run fine, about the same speed as tiger did. There is support for all hardware, and like expected some issues with media streams in browser, especailly flash. It needs some attention. Are any of you trying other unix / linux distros?