If you need use VirtualBox, you can restart the computer and choice the kernel 2.6.24-17 in the Grub menu.
Other thing, when you install virtualbox-ose, you need install manually too the virtualbox-ose-modules-KERNELversion, here there is other dependency bug.
If you want, you can change the line "default 0" in file /boot/grub/menu.lst to "default 2" and the default kernel will be 2.6.24-17 and virtualbox will go perfectly.
If you need use VirtualBox, you can restart the computer and choice the kernel 2.6.24-17 in the Grub menu.
Other thing, when you install virtualbox-ose, you need install manually too the virtualbox- ose-modules- KERNELversion, here there is other dependency bug.
If you want, you can change the line "default 0" in file /boot/grub/menu.lst to "default 2" and the default kernel will be 2.6.24-17 and virtualbox will go perfectly.