I was an intern at Apple right around the time of the beta. The performance was bad. They had a program where the best performance improvement for the week woul

I was an intern at Apple right around the time of the beta. The performance was bad. They had a program where the best performance improvement for the week would net a top of the line Mac development machine. They did a whole bunch of tuning over the years, including parallelizing the startup sequence and optimizing linking to make startup faster that really made a difference.