IMHO, it appears to me that most of the virtualization uses NAT in the default setup as soon as I changed my setting to bridged everything worked instantly. I had very similar issues with QEMU. I gave up on the QEMU and settle for VirtualBox, Windows 7 and IE runs great on the other system it was very slow and IE actually streaked up and donw the page.
Check out think, perhaps you will like it better.
https://www.virtualbox.org/wiki/Downloads
Regards