Sun's FOSS VirtualBox hits the sweet spot for Linux (ITWire)

That snippet of text from the article is rather mis-leading FUD

 - Xen does not mandate guest OS modification. Xen supports full virtualization using host
CPU's hardware virt extensions.

 - The claim that it is the only 'professional' open source virt solution is laughable. Xen is
GPLv2+ licensed and included in many Linux distros, (both commnuity & enterprise distros), as
well products from Citrix/VirtualIron. KVM is also fully open source & being incorporated into
major Linux distros for virtualization

 - VirtualBox's "professional" edition is not in fact entirely open source - the remote
graphical desktop RDP server is completely closed source, as is USB hot-plug ability (the
article does acknowledge this at the end, having previously said VirtalBox is the only
professional open source virt - rather contradictory)