Description of problem:
Install two PV NIC drivers on one guest and do sleep stress with IO testing,the windows can't hibernate

Version-Release number of selected component (if applicable):
xenpv-win-32-bit-1.0.0-1.el5.noarch.rpm

How reproducible:
always

Steps to Reproduce:
1.Install windows 2003 sp1 guest on xen
2.Install the xenpv-win-32-bit according to the install manual
3.Add one network car to the guest,thus the guest has 2 NIC
4.Do Sleep Stress with IO according to http://msdn.microsoft.com/en-us/library/dd450403.aspx
  
Actual results:
The windows will preparing to the hibernate and can't hibernate 

Expected results:
The test can finish running

Additional info:
If I install one NIC pv driver,the Do Sleep Stress with IO can pass.
with two NIC pv drivers,the Do Sleep Stress with IO can't finish