Description of problem:
boot Win2008R2, Press F8, and select "Send Ctrl + Alt + Del", no response for this message

Version-Release number of selected component (if applicable):
kvm-83-213.el5

How reproducible:
100%

Steps to Reproduce:
1. boot Win2008R2
/usr/libexec/qemu-kvm -drive file=/usr/images/win2008r2-64-virtio.qcow2,index=0,if=virtio,media=disk,cache=none,format=qcow2,boot=on -net nic,vlan=0,model=virtio,macaddr=9a:2d:20:42:2a:60 -net tap,vlan=0,ifname=t0-140400-SfXj,script=/usr/scripts/qemu-ifup-switch,downscript=no -m 2048 -smp 2,cores=1,threads=1,sockets=2 -cpu qemu64,+sse2 -vnc :0  -rtc-td-hack -M rhel5.5.0 -usbdevice tablet -boot c -monitor stdio
2. Press F8, and select "Send Ctrl + Alt + Del"
3.
  
Actual results:
no response for this message.

Expected results:


Additional info:
1. host info
processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz

flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr sse4_1 sse4_2 popcnt lahf_lm

kernel:
2.6.18-232.el5