[Fedora-xen] yum update breaks xen

[Ben]

Hey guys, I had a perfectly working xen install on my FC5 box running  
2.6.16-1.2080_FC5. But there were some serious IO bottlenecks, so I  
figured maybe the new kernel release would help out.... quite the  
opposite. Now, I cannot start any domUs. Here's a snippet from my  
xend.log when I try to start the xend service:

[2006-05-11 08:47:19 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')


Any ideas?