We don't require OpenVZ support and need to leverage some of the newer support/features in the 3.x kernel series. If anyone is interested to try these out the packages are here:
Included in the above is also a copy of the /etc/default/grub file I am using, when you change this file you will need to run update-grub and reboot. All through my testing I have left the existing 2.6.22 kernel installed and booting, I suggest you do the same.
This is obviously COMPLETELY unsupported but if you need some of the newer features/improvements in the 3.x kernel series and don't need OpenVZ support then by all means it's worth a go just to test.
Yes we will be running these in production, but if you want to I suggest you test carefully as we have/are.
As always YMMV...