Virtual desktops have been around for over 5 years, and many perceive they are the next thing to supersede Windows terminal services. This is due to each user having a separate instance of windows to themselves and the high speed delivery of additional users.
We have seen/heard many people trying to move virtualized Linux servers from Xen to VMware and having issues. After some work ourselves we have found a way to do this and the solution is simpler than anticipated.