Quoting from SiliconBeat:
XenSource, a Palo Alto start-up backed by Kleiner Perkins, and active in the open-source “virtualization” area, is shuffling its management team, and has made a few layoffs.
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Turns out, co-founder Moshe Bar resigned, and relocated to Texas with his family. And chief executive, Nick Gault is leading the search for his replacement. In addition, several engineers were laid off, as the company shifts its R&D team to the East Coast, where some of the remaining seven co-founders were based anyway…
Read the whole article at source.
Update: SiliconBeat reports details about the XenSource mass leaving: around 20 managers included 2 founders and Michael Enescu, VP of Development.