IMac on Netgear X104 and Airport Extreme intermittently loses IP address

We have a Netgear X104 plugged into an Airport Extreme Base Station.
Another X104 (which carries network information through the household electrical wiring) is plugged in for a networked iMac with OS X v 10.5.4.
The network works flawlessly, but every few days, the iMac loses its IP address. All lights are working properly on the X104, indicating that it is seeing the network.
The only workaround on the iMac is to go to: System Preferences/Network/Advanced and click RENEW DHCP LEASE. The iMac then gets reassigned a new IP, such as 10.0.0.200 by the Airport Extreme.
The Airport Extreme, settings are as follows.
Wireless Mode: Create a wireless network
Wireless security: WPA/WPA2 Personal
Connect using: Ethernet
Configure IPv4: Using DHCP
IP Address: Provided automatically
Powering off and on the Airport Extreme and the Cable Modem have not fixed this recurrent problem.

Hi,
http://osxdaily.com/2009/12/22/mac-wireless-problems-guide-to-troubleshooting-ai rport-wireless-problems-on-your-mac/
Hope it helps.
Cheers.

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Posted: Jul 5, 2007 8:22 PM Reply
I just got my Imac to connect to the internet using my Airport Extreme but only by using WEP. I had my Windows XP SP2 machines connecting using WPA/WPA2 with no problem. The Imac will not connect using anything other than WEP, and 1 of the XP machines will not connect using WEP.(I have not tried the other XP machines) I had to set the Airport Extreme for an open network in order to let both computers access the shared hard drive and access the internet.
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IMac on Netgear X104 and Airport Extreme intermittently loses IP address

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