Thank you for doing this. I am very appreciate and sorry for wasting your time
Lets be honest here I've reported it more than a week ago and so far no one
else joined the discussion. I guess it is quite obvious that there is
something wrong with my setup rather than anything else...
I've launched 64 bit CentOS 6.2 as two guests in the same manner as I did with
two 64bit Debian testing (wheezy) guests in the previous attempt and got the
same issues with the virtio NIC. There is something wrong with my setup...