XEN Hypervisor on Inspiron 6400/E1505

Hello,

recently I installed on my laptop with openSUSE11/KDE3.5.10 all necessary packages for XEN/VirtualBox with Hypervisor. The installation is going well but while rebooting the machine hangs and I have to kill all with the power switch... no entries in /val/log/messages are made. I heard about that some prozessors are not able to boot XEN or there is no item to enable V-Support in the bios... somebody can help me?