I have a repeatable problem - on one private-side workstation, if
pcAnywhere, running as a host, is accessed through a NAT'ed public
address, performance is fine. If the same machine is accessed through a
private address while on the VPN, the performance is slower and the
connection drops regularly. It's worth noting that some other users,
notably me, can acess this same site and this same pcA host over the VPN
without problems, so the problem clearly is not solely with the VPN, but
I need to make it work better over the VPN from all remote locations - I
seem to be one of the few people who has no problem with the VPN.

This is a Netware 5.1 server running BM 3.6, more details gladly
supplied on request.