VNC and stability?

First off, let me ask: Is there a vendor-neutral and project-neutral
newsgroup or mailing list on which people discuss the different features
and attributes of all VNC implementations? I see a bunch of VNC mailing
lists, but they all seem to be associated with a specific vendor or
project.

Anyway, basically, my question is: What VNC server is the most stable on
Redhat Enterprise Linux 3 and/or Fedora Core 3?

I've tried both the Xvnc that came with RHEL 3 for opteron, as well as a
32 bit one: "Xvnc version 4.0 - built Jun 14 2004 12:01:28" which I
downloaded from RealVNC, but both are suffering Xvnc death from time to
time.

Is there a version of VNC that doesn't crash, no matter what you throw at
it?

BTW, I'm connecting from a variety of RealVNC clients, as well as PalmVNC
over 802.11b, tunneled variously over ssh, zebedee, PPTP and OpenVPN,
depending on where I'm connecting from, in case it matters.

Thanks!