No logging? Empty Editor.log at all times

Hi, I'm trying get a hold of more debug data from my game and from what I've read the editor.log file is what I need, with info like this: http://unity3d.com/support/documentation/Manual/Reducing%20File%20size.html .

But it never seems to contain any data! I've tried opening it using the Open Editor Log-button in the console window and also by finding it in Explorer in the C:\Users\Mrten\AppData\Local\Unity\Editor folder.

Is there some setting I'm missing? I have Unity PRO on Windows 7

I am having the same issue but running on Windows XP.