can't install xen on rhel5 update1 beta

hy all,
i have a rhel5 updated to update1 beta
x86_64 arch

i've tried to install xen , but i have strange bug :-(

yum install xen
says 
Error: Missing Dependency: libvirt = 0.2.3-0 is needed by
package libvirt-python

i've only subscribed to virtualization-beta and
supplementary-beta channels on rhn website.

any clues to fix this ?

-- 
Rachid Zarouali
Administrateur Systèmes/Applications
AFNIC
rachid.zaroualinic.fr
01.39.30.83.47

_______________________________________________
rhelv5-beta-list mailing list
rhelv5-beta-listredhat.com
https://www.redhat.com/mailman/listinfo/rhelv5-beta-list