Hi!
I try install convirt subpackage  - xen-tools installation failed and now:
0# xm mem-set Domain-0 2048
Traceback (most recent call last):
  File "/usr/sbin/xm", line 5, in <module>
    from xen.xm import main
  File "/usr/lib/python2.6/dist-packages/xen/xm/main.py", line 52, in <module>
    from xen.xm import console
  File "/usr/lib/python2.6/dist-packages/xen/xm/console.py", line 19, in <module>
    import xen.lowlevel.xs
ImportError: libxenctrl.so.3.2: cannot open shared object file: No such file or directory
File libxenctrl.so.3.2 not exist in my system, but exit 
/usr/lib/libxenctrl.so
/usr/lib/libxenctrl.so.4.0
/usr/lib/libxenctrl.so.4.0.0
How fix it ?