In the discussion Jim had a link talking about the different kernel versions.
1) openSUSE 12.3 comes with[size=3] Kernel: [linux-3.7.10](https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.7.10.tar.xz) (Updated for you from YaST)
2[/size]) Latest Stable version is at:[linux-3.11.8](https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.11.8.tar.xz) [size=3][size=3](Use VirtualBox 4.3.2 with kernel 3.11)
[/size][/size][size=3]3) Kernel Head version is at: [linux-3.12.0](https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.12.tar.xz) (Works with VirtualBox 4.3.2)
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What is Kernel Head ?
And I seem to be in violation of point #2 in that I have kernel 3.7.10-1.16 and am running VirtualBox 4.3.2.
Kernel head is normally the most recent beta kernel release while Stable is the highest kernel version not in beta. At the moment, no beta exists and so niether 3.12.0 and 3.11.8 are beta, kind of messing up the repo names. openSUSE, once released, does not change the main kernel version so openSUSE 12.3 is stuck at 3.7 while the minor version can change with security updates.