Bug 505789

Description of problem:
When creating a new virtual machine at the end of the wizzard of virt-manager always rises an error. the log shows:
(/var/log/libvirt/qemu):
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LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin HOME=/home/rene USER=root LOGNAME=root /usr/bin/qemu-kvm -S -M pc -m 512 -smp 1 -name test -uuid f99e2e8f-cbcd-36cf-ad12-60a7fc4ac348 -monitor pty -pidfile /var/run/libvirt/qemu//test.pid -no-reboot -no-acpi -boot d -drive file=/var/lib/libvirt/images/Test.img,if=ide,index=0 -drive file=/home/rene/virtBootImages/NortonGhost2003.iso,if=ide,media=cdrom,index=2 -net nic,macaddr=54:52:00:30:3f:b2,vlan=0 -net tap,fd=23,script=,vlan=0,ifname=vnet0 -serial pty -parallel none -usb -vnc 127.0.0.1:0 
Could not acquire pid file
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Specially this "Could not acquire pid file" looks strange to me, because the folder for the pid-file /var/run/libvirt/qemu/ exists?

When copying the command to the Command-Line (LC_ACLL=C PATH=....) anything looks good and the virtual machine is accessable. But still not within virt-manager!

The same behavier shows when trying to start a already existing virtual machine (one created at F10, before the upgrade to F11)

Version-Release number of selected component (if applicable):
libvirt.x86_64                             0.6.2-11.fc11          installed     
libvirt-python.x86_64                      0.6.2-11.fc11          installed     
python-virtinst.noarch                     0.400.3-8.fc11         installed     
virt-manager.x86_64                        0.7.0-5.fc11           installed