After editing a .tui files inside of Novodex Rocket, I was able to generate a lot more bricks in this example. There are 30,001 rigidbodies to be exact. It took 9 minutes to solve it all out and to dump each frame as a bmp.
I didn't know at this point that multithreading isn't switched on by default, so you could probably expect it to complete in 5 minutes rather than 9 minutes.
CPU: Intel Core 2 Duo E6850 @ 3.0GHz