I've set up an instance of Ubuntu 12.04.1 LTS under Hyper-V 2012. However it seems to be nondeterministic as to whether or not it completes the boot process.
I get a Kernel Panic, "IO-APIC + timer doesn't work!", which from my research is caused by not having integration services correctly installed?
It was my understanding that the integration services were all now baked into the kernel? It should then be fine to update the OS (including any kernel updates, as I'm guessing that's what has happened)
Being able to rely on this successfully booting would be great as I intend on using ssh for crisis situations.