Are you getting a self assigned IP adderss starting with 169
by ziptie - 3/19/12 7:45 PM
In Reply to: G4 Airport help by rcbuitron
If so, this can be caused by a bug in Leopard that affects a lot of G4s, or from a weak wifi signal, by borrowing a neighbors unsecured wifi.
If it isn't the later, there is a Terminal command that can fix it.
Type the follow command first to access root control:
sudo su
then hit the return key
It will then prompt you for your password. Enter your password and hit enter.
then it should say something like "sh-3.2#" now type the following command
ipfw flush
then hit the return key - it will then ask you 'Are you sure' or something like that. simply hit the Y key. Thats it!
Once you have done that, type in exit then hit the return key to exit out of root.
then close out the terminal program.

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