As you know, WEP is insecure, hiding the SSID only creates trouble for you and WPA is now insecure.
My advice is to setup the router again, pick a new SIMPLE SSID name (short is fine.) And then move to WPA2 AES personal security.
This will fix most address conflicts as the router and PCs will get new addresses. And the security will block those that are connecting to your network without permission and causing trouble.
Bob
I have just moved house, I use a Mac Pro (10.7.4) and a Mac Book Pro (10.7.4)
On the desktop mac I use a wireless dongle to connect to BT Broadband Router,
The laptop uses its own wireless to connect to the router.
We also have 2 other PC Laptops that connect wirelessly to the router.
The internet is very temperamental, keeps dropping off and I have to restart the router.
I keep getting a message on my desktop saying -
"Another device on the network is using your computers IP Address.
If you continue to have problems, change the IP Address of this computer or the IP address of the other device"
Is this something that could be causing problems for the router?
And how do I go about fixing the issues as I am totally useless once the word network is used!!
Apologies for posting in the wrong place, and any help will be really appreciated!!
Many thanks
A

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