Hi, i did install and run longhorn(RC0) under F8 for quite a while without problems. yesterday i did stop longhorn, patch all dom's and restart the server. ( i am not aware of any xen related patches) wenn i try to start longhorn now, i get the message ------- [root@control1 ~]# virsh start longhorn1 libvir: Xen Daemon error : POST operation failed: (xend.err 'int argument required') error: Failed to start domain longhorn1 ------- virsh define works without error message. Btw. its all 64Bit installation what to do ? ds