During the VAGUE meeting moments ago someone mentioned visualizing desktop systems. The answer is XenDesktop1. The system (which I have not used -- but I have used VMWare's VDI version of this). It seems as though2 allows you to run x individual instances of Ubuntu, or Windows XP and deticate them to individual users. The users then use any standard ICA device (thin client, etc, etc) to connect to your desktop in the Xen system.
1: http://www.citrix.com/english/ps2/products/product.asp?contentID=163057 2: http://www.citrix.com/English/ps2/products/feature.asp?contentID=163698 Cheers, Stan Brinkerhoff
