...but not ready for real-world usage yet.
My experience with Virtualbox was full of hope, but in the end disappointing. It is pretty buggy, and I was spending more time hunting down errors and obscure error messages than I was working.
For example, the USB connect functions don't work on 64-bit host OSes. This latest release has reduced slightly the number of as-yet-unresolved critical bugs, but is still not as stable as MS Virtual PC (which is limited to Windows guest OSes).
If the engineers behind VirtualBox keep going it can be a great product ... worth following up on as it matures.
The good news is the the VMware Player is also free, super stable, and can now make virtual machines as well as play them. It lacks the "snapshot features" of VirtualBox, but is a lot more stable.
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