[libvirt] Is virConnectListDefinedDomains broken?

Hi, list, Recently, I upgraded my system to Xen 3.3.1 (from Xen 3.0.3). After this, I found that virConnectListDefinedDomains no longer works. The problem can be reproduced by executing "virsh list -all" - those defined but inactive domains are not be returned. Has libvirt API been tested against Xen 3.3.1? Can this problem be fixed by upgrading libvirt to version 0.6.5? What is the best approach to address this issue? Thanks in advance, Eddy OS: CentOS 5.3 Xen: kernel-xen.x86_64 2.6.18-128.1.14.el5 installed kmod-drbd83-xen.x86_64 8.3.0-3 installed xen.x86_64 3.3.1-0 installed xen-libs.x86_64 3.3.1-0 installed libvirt: libvirt.x86_64 0.4.4-3 installed libvirt-python.x86_64 0.4.4-3 installed python-virtinst.noarch 0.300.2-12.el5 installed virt-viewer.x86_64 0.0.2-2.el5 installed