I'm on UML. I'd love to run Xen. But I'm afraid of things breaking.

I run an Ubuntu desktop via FreeNX, and it was kind of a pain to get everything up and running properly. I'm afraid of losing that work.

I don't know that much about Xen -- but to the guest system, doesn't it seem like a full system? I mean, don't you have to have a kernel inside of the guest, and something like grub?

Does the automated system that moves us set that stuff up automatically? Does it use the same kernel we're using for UML?

I'm sure it works -- I'm just queasy because I don't understand how.