All,

here is my domain xml

<domain type='kvm'>
<name>tests</name>
<uuid>76bc677f-ee5b-ef0b-1d02-72d12785b1d8</uuid>
<memory>524288</memory>
<currentMemory>524288</currentMemory>
<vcpu>1</vcpu>
<os>
    <type arch='x86_64' machine='pc-0.12'>hvm</type>
    <boot dev='network'/>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <source file='/var/lib/libvirt/images/testKVM'/>
      <target dev='hda' bus='ide'/>
      <address type='drive' controller='0' bus='0' unit='0'/>
    </disk>
    <controller type='ide' index='0'/>
    <interface type='network'>
      <mac address='52:54:00:a4:0e:ce'/>
      <source network='default'/>
      <target dev='vnet0'/>
    </interface>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' keymap='en-us'/>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
    </video>
</devices>
</domain>

my host is RHEL 6 beta.
i don't have any clue where i am going wrong in the configuration of the host or configuration of the domain.

--
Thanks & Regards

Ravi Pawar