You guys all seem to be lucky - I have B&W G3 350MHz with 640Mb RAM and I find performance under 10.3.9 sluggish. The internet speeds on the same connection with my Macbook Pro are infinitely faster even though the wirless adapter on th G3 runs at 11Mbs and the USB 1.1 bandidth is still bigger than my internet connection. There should be no difference, I think, so the difference must be in processing speed, the RAM, and s for the Skype video, the graphics card I'm guessing - but the G3 is slower on the net than it used to be under OS9.
It won't run Skype with video at all. It also won't play a lot of streaming video or breaks up half way through.
I have costed out upgrading the RAM to 1 Gb, the graphics card to an ATI radeon, the USB to 2.0, the hard drive to 250Gb and the processor to a 1GHz G4. But if I did all of that I could buy a higher performance Mac Mini for the same price. So I'm tending to think the G3 B&W is simply past it and I should replace it with a Mac Mini.