> I don't know if there are enterprise-supported Xen distros.
Didn't Citrix buy xen a while back (or some part of it)? They had something called xenapp, now apparently "Citrix Virtual Apps and Desktops (XenApp & XenDesktop)"?
Not really the same as "a supported xen distro" I guess.
Also, I'm pretty sure if there's a Xen bug you can throw Citrix under the bus (assuming you're paying them for enterprise support).