I've recently realised that my laptop (Dell Inspiron 640m) which should come with a dual core, doesn't actually run like one on Ubuntu. For example when I look at the system monitor, I see only one CPU trace and when I click on system it says I have the Intel Core 2 CPU T5500@1.66 GHz.
Now I know I have a dual core. The sticker on the chassis says it should have an Intel Centrino Duo. Question is, how do I get the dual core functionality back? Please help!
I'm using Lucid 10.04 LTS.