I have a 50MHz 68030 and 16Mb RAM. I'm currently using the free AmiTCP (4?) demo but will probably upgrade to Roadshow. I'm using OS3.1 and iBrowse plus the bundled AmiTCP telnet and ftp clients. I've not played with Samba (for windows shares), not yet found a working ssh client and the VNC client that works for everyone else refuses to work for me.
I'd have thought 3.1 would be faster than 3.9...