MacBook1,1 OS X Leopard 10.5.5 slow WiFi

Thanks to this post http://blog.davenicoll.com/2008/12/04/fixed-slow-wifi-on-mac-os-x-1055/, I can now fix my slow WiFi problem in my MacBook (version 1,1--the very first intel MacBook). The problem is so annoying. Sometimes, even if I got maximum signal strength, it seemed to me that I have no WiFi connection at all (I could not even reach my WiFi configuration page in my Router).

Here's a solution I found. It is working well :)

1. Shutdown.

2. Start your MacBook and hold the "shift" key. This will result in "Safe Mode" boot in Leopard.

3. Once booted, login with your username/password.

4. Reboot, and done :)