I have just finished installing Ubuntu 8.10 on my ten-year old IBM T-23. It took about fifty minutes and involved a few error messages creating new partitions and formatting the harddrive.
My very first impression: what an ugly wallpaper.
And what an ugly colour theme too; why choose khaki brown for a default theme? I did actually expect to be blown away by flying pinguins or some other Linuxish theme. Maybe something to work on for version 9.0?