I'm looking at AORG via Firefox on Ubunu 10.10 which ive just completed installing and configuring on an old HP Omnibook 6100 Laptop. 1Ghz P3, 512MB Ram 40GB HD and DLINK DWL-G650M wireless pcmcia card(niswrapped). Runs quite nicely.
I think the gfx driver is a little less responsive than it was under XP. Video seems less smooth. I'l see if I cant tweek that. Best to burn a backup first though.