Kernel version 3.0.1 stable was just released a week ago. I’m a lazy guy, so I install the precompiled .deb packages.

Get the linux-headers-*-all.deb, linux-headers-*-generic-*.deb, and finally linux-image-*.deb from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.0.1-oneiric/
Install the .deb Packages in this Order:
dpkg -i linux-headers-*-all.deb
dpkg -i linux-headers-*-generic-*.deb
dpkg -i linux-image-*.deb

Restart your machine, enter the grub menu by typing shift and boot the new kernel. Its possible that u get in trouble while booting the new kernel – just restart and take an older one. Remove linux-headers-3 and linux-image-3 if it didn’t work.

Maybe u need module-init-tools 3.13 where u can get here https://launchpad.net/ubuntu/oneiric/amd64/module-init-tools/3.13-1ubuntu1

Other precompiled Kernel versions http://kernel.ubuntu.com/~kernel-ppa/mainline/