I have been tossing the idea around of getting a Virtuozzo server, as my next server... I currently have an old Celery 1.3, and would really like to upgrade some time soon.

I haven't found a whole lot of answers about Virtuozzo, so I'll just toss out a few questions:

1) What is the default limit for how many virtual servers I can have?
2) How much does it cost to purchase more licenses?
3) Assuming there are some limitations of the capabilities virtual servers have; is it possible to install Windows Server 2003 on a virtual server?
4) How good is SW Soft with security updates; am I going to have to band-aid Virtuozzo as much as I do Ensim?
5) How well does it manage resources? If a website is getting slashdotted on one virtual server, are the other virtual servers going to get bogged down too?
6) Is there any sort of load balancing and/or clustering capabilities, if I wanted to add another Virtuozzo server later?
7) Does EV1 handle licensing fees with SW Soft, or do I have to? I mean, do I have to purchase a Virtuozzo license directly from SW Soft, or can I have it rolled into the server cost much like a control panel.
If EV1 handles the licensing fees; how much does Virtozzo cost, on top of the base server price?