A couple weeks ago I changed the way dates and times are displayed, and not everyone loved the change.
The thread "Times instead of dates" in
Site Talk forum
So today I am glad to say that this is now a preference option. To change how the dates are displayed, go to your profile and click on "Change your site preferences." You'll then see at the top under "How times and dates are shown" you can change which way the times are presented to you.