Enabling Dual-core/Hyper-threading in Ubuntu

Ubuntu 6.10 (Edgy) doesn't enable dual-core out-of-the-box. Maybe the next one will. Anyway to enable it, you have to use a different kernel.
I started to hear people screaming. I can see you clicking away of this article right now!

Well, don't be afraid, it is as easy as a single click nowadays. All you need to do, if you have Intel (non-AMD) processor is this:
From synaptic package manager choose these 2 packages:
kernel-686-smp
kernel-restricted-modules-686
And then reboot.
For command-line people just type:
sudo apt-get install linux-686-smp linux-restricted-modules-686
and reboot.

To make sure your kernel now sees the both processor type:
cat /proc/cpuinfo | grep -i '^processor' | wc -l
This command will show you how many processors is recognized by the kernel.

For AMD users, the packages are not named 686, they are named k7.
Good luck.

A last hint: (thanks to my dear friend Shereef Sakr)
To speedup the booting process, you might want to enable concurrency in the booting processes.
In the /etc/init.d/rc file, there is a line called CONCURRENCY=none, it is probably the first un-commented line. Change 'none' to 'shell' or to 'startpar'.

Shell and startpar both are concurrent but shell cares about the order or the printed output. I used startpar and it didn't work, so I used shell and it is working fine, although not as fast as startpar; startpar booted in a blink, but shell just cuts few seconds off.