Use the Update Manager to update everything. Then reboot, to put the new kernel into use. After rebooting, you can run "uname -r" to check the kernel version in use, and compare it to the latest version listed at https://launchpad.net/ubuntu/+source/linux (scroll down to The Oneiric Ocelot).
Use the Update Manager to update everything. Then reboot, to put the new kernel into use. After rebooting, you can run "uname -r" to check the kernel version in use, and compare it to the latest version listed at https:/ /launchpad. net/ubuntu/ +source/ linux (scroll down to The Oneiric Ocelot).