I installed today 3.8rc3 from Mainline Kernel PPA and it booted succesfully. There also was no problem with building the modules [NVIDIA 313.09, VirtualBox 4.2.6 and OSS v4.2 build 2007 (Open Sound System)].
That's the first kernel after the 3.5 series that works on my machine (3.8rc1 and rc2 won't boot).
I installed today 3.8rc3 from Mainline Kernel PPA and it booted succesfully. There also was no problem with building the modules [NVIDIA 313.09, VirtualBox 4.2.6 and OSS v4.2 build 2007 (Open Sound System)].
That's the first kernel after the 3.5 series that works on my machine (3.8rc1 and rc2 won't boot).
Ubuntu 12.10 64-bits
AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ × 2
GeForce 9600 GT/PCIe/SSE2