SOLVED: Installing FreeBSD 8 as domU

[Thor Lancelot Simon <tls%panix.com@localhost>]

The issue turns out to have been an incompatibility between the Xen
VNC server code and certain VNC clients.  The VM was running, but once
sysinstall flipped the screen color to blue, all hell broke loose and the
VNC client couldn't display.

Disabling all variants of Hextile encoding on the client side seems to
fix it all.

Next question: once I get this system installed, how exactly do I migrate
it to use the PV drivers?

Thor