Description of problem:
kernel 2.6.16-1.2111_FC5xen0 breaks xend

Version-Release number of selected component (if applicable):
2.6.16-1.2111_FC5xen0

How reproducible:
install updated kernel 2.6.16-1.2111_FC5xen0 and run 'xm list'

Steps to Reproduce:
1. update kernel from 2.6.16-1.2107_FC5xen0 to 2.6.16-1.2111_FC5xen0
2. run 'xm list'
3. error 
  
Actual results:
 Error connecting to xend: Connection refused.  Is xend running?

Expected results:
no error - normal output of xm list

Additional info:

happens on i386 as well as on x86_64

output in xend.log shows:

[2006-05-08 13:10:21 xend] INFO (SrvDaemon:285) Xend Daemon started
[2006-05-08 13:10:21 xend] INFO (SrvDaemon:289) Xend changeset: unavailable .
[2006-05-08 13:10:21 xend] ERROR (SrvDaemon:299) Exception starting xend ((111,
'Connection refused'))
Traceback (most recent call last):
  File "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvDaemon.py", line
293, in run
    servers = SrvServer.create()
  File "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvServer.py", line
106, in create
    root.putChild('xend', SrvRoot())
  File "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvRoot.py", line 40,
in __init__
    self.get(name)
  File "/usr/lib64/python2.4/site-packages/xen/web/SrvDir.py", line 82, in get
    val = val.getobj()
  File "/usr/lib64/python2.4/site-packages/xen/web/SrvDir.py", line 52, in getobj
    self.obj = klassobj()
  File "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvDomainDir.py",
line 39, in __init__
    self.xd = XendDomain.instance()
  File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 550, in
instance
    inst.init()
  File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 70, in init
    xstransact.Mkdir(VMROOT)
  File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xstransact.py",
line 317, in Mkdir
    complete(path, lambda t: t.mkdir(*args))
  File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xstransact.py",
line 323, in complete
    t = xstransact(path)
  File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xstransact.py",
line 20, in __init__
    self.transaction = xshandle().transaction_start()
  File "/usr/lib64/python2.4/site-packages/xen/xend/xenstore/xsutil.py", line
18, in xshandle
    xs_handle = xen.lowlevel.xs.xs()
RuntimeError: (111, 'Connection refused')