@rayt:
The amiga is fast enough given a descent processor. But the current quite inefficient TCP/IP-stacks for the Amiga coupled with inefficient ways of transferring the data from the NIC buffers results in a maximum of of not much more than 10Mbit/sec.
@leirbag28:
Recently being able to try Ibrowse on a 68060-based Amiga with graphics-card I must say that I was surprised - it was very fast, definately felt as fast as a bit older PC. Though I have done lots of surfing on a 68060-based Amiga without graphics-card and that does not feel fast.
(edit): The PCMCIA-bus is specified to be able to achieve about a 2 MByte/Sec transferrate when using 16-bit transfers.
/Patrik