I think the FAQ should at the very least say PPC =>200MHz, or to be more realistic, 600MHz.
Mozilla 1.3 runs great on my Intel Celeron 400MHz, 196Mb RAM, win2000 and I have also seen it working on a Pentium II 233 MHz, 128Mb, win98 quite fine as well.
So I think your "realistic" 600MHz requirment "too much". Plus think, that it will run on a very less bloated OS than Windows...
