Constraints in the game engine

I was messing around with the game engine in 2.48a when I noticed that the constraints don’t seem to be working. This include rigid body joints and track-to. I have no idea why they are not working. I have python 2.5 installed and have the official release of 2.48. I figured I must be the only one otherwise someone would have said something.
Any help would be appreciated.

Ok maybe I should clarify a little more…
I was going through this tutorial when I first noticed it.

I followed the tutorial exactly but instead of the cubes looking like they have constraints they just free fall as soon as the game is started.
FYI: the constraints work fine when the game engine isn’t running so I know my setup is fine.