Leopard Speed Boost Observed (reset PMU)

After resetting the PMU on my MBP running Leopard, the startup time of my login items (growl, thunderbird, ical, etc) improved very dramatically.

http://docs.info.apple.com/article.html?artnum=303319

instructions are at the very bottom of the article as follows:

MacBook, MacBook Pro

1. If the computer is on, turn it off.
2. Disconnect the AC Adapter and remove the computer's battery.
3. Press and hold down the power button for 5 seconds and then release the button.
4. Reconnect the battery and AC Adapter.
5. Press the Power button to restart the computer.

Directions for various iBook and PowerBook models are here:
http://docs.info.apple.com/article.html?artnum=14449

Disclaimer: don't blame me if something bad happens

The observed effect for me was, on a clean boot, after signing in, startup items took a scant 3-5sec compared to the ~15-20 before.