Hi everybody,
I had a lot of sporadic problems after upgrading my NS3.3 vmware image to vmware WS 6.
My network setup is NAT with a fixed IP on Nextstep side. I usually use ftp to interface with my Windows XP host machine. However, after getting my network to a stable state with the latest vmware WS 6.5.4 installation, ftp connections hung. Any ls or get simply resulted in error message "500 use PASV instead of PORT".
Finally I could resolve these problems by replacing the vanilla NS3.3 ftp command in /usr/ucb with the one I compiled out of the package "ftp-bsd-network-2.tar.gz" found on ftp://ftp.cs.tu-berlin.de/pub/NeXT/net/misc/unix .
So if your ftp client does not work, consider replacing it by this version.
Have fun!