Just thought i would make a note here in case anyone else ran into this.
I am running a pc with windows vista (64 bit) (its my gaming PC). It has an AMD Phenon 9550 quad core 2.2 gig processor and 8 gig ram.
I have Sun xVM VirtualBox 2.1.4 installed
When i create a new VM and try to install 32bit CentOS 5.2 .. the install hangs at "Net: Registered protocol family 2"
.. before it even gets to testing out the media. :-)
With the VM powered off, click on ... the VM Name->Details-tab>General-> Advanced tab .. and select the checkbox "Enable IO APIC".
Power on the VM.. and that should at least get you and running.
Maybe someone who knows the details can fill us in on what that actually does?