Im testing Vbox and trying to run Windows 2008 64bit server on Ubuntu 9.10 server 64bit host. I have 4 x Xeon E7440 server so i have 16 cores. But when i set more than 8 cores to virtual machhine guest on booting crashes. It crashes when booting from DVD install disk. It crashes with same error when i install with less cores and swith to more than 8 after install. I tested Vbox 3.0.12 , 3.1 beta 3, Vbox oss from ubuntu. Vbox log and screenshot from host is attached to post.
P.S.
Sorry my English isnt perfect