Pkg xen devel - Jul 2012 - Bug#648670: xm was unable determine an actual domU state under some conditions

Hi Moonwalker,

You might have some luck poking around under /var/lib/xend/*, or perhaps
by removing and recreating the guest.

Unfortunately the xend toolstack is not really maintained upstream (to
be honest it is unmaintainable and no one has stepped up). Since you are
using the "managed domains" functionality you might be interested in
the
xcp-xapi package which is in Wheezy today.

Ian.