If you are trying VirtualBox (which I recommend) make sure you get today’s update, version 1.6.2.
The story: I tested VirtualBox 1.5.6 which works great. I thought I should try the latest version, the first with Sun xVM branding, so downloaded it yesterday. Then I wasted an hour trying to get the networking working. With VirtualBox, the default is NAT networking with your host PC, which enables the Internet but means your virtual machine is detached from your local network. If you want it on your local network, you have to create a Virtual Host Interface and then bridge it with your real network connection. Not difficult; but version 1.6.0 broke something so that the Virtual Host Interface could not transmit data. I tinkered with various settings and drivers until I discovered this changelog for 1.6.2:
- Networking: fixed a host interface networking regression introduced in 1.6.0
Right. Installed the update and everything is fine. The good news: VirtualBox is just as fast as before. In fact, it scored slightly higher on PassMark: 631.
I also updated Virtual PC 2007 to SP1. In my test this was fractionally slower than before, with a score of 387. Neither score is significantly different though.