[BlueOnyx:11567] Serious issues with Kernel 2.6.32-279.11.1.el6

[bluequartz at ozin.com]

Serious issues with Kernel 2.6.32-279.11.1.el6 on two different servers

If anyone can help I would be most appreciative.

Currently running:
5107R
Kernel Version: 2.6.32-279.9.1.el6.i686 (SMP) i686
As a Hyper-V virtual guest with MS Hyper-V components installed (Linux Integration Services Version 3.4 for Hyper-V) 

At the moment 5107R still has the kernel upgrade bug where a kernel upgrade does not take effect unless you manually change /boot/grub/grub.conf

So I noticed that Kernel 2.6.32-279.11.1.el6 had been installed and thus I edited /boot/grub/grub.conf  in 3 places to use this new Kernel.

Booting into the Kernel works and the server becomes responsive on the network for a few seconds then something major crashes and takes the server down.

The console shows all sorts of strange output but the last two lines are:

[<c052e0a1>] ? sys_read+0x41/0x70
[<c0409a9f>] ? sysenter_do_call+0x12/0x28

A screenshot of the console output is here: 
http://www2.ozin.com/boot.png 

I can’t see anything particular in dmesg but if you want to take a look it is here:
http://www2.ozin.com/dmesg.txt

Editing /boot/grub/grub.conf to use 2.6.32-279.9.1.el6.i686 (SMP) i686 fixes the issue so it seems to be something about this new Kernel.

Any ideas where I should start looking?

Thanks in advance

Jason