I have a Linksys BEFW11S4 ver 3 wireless access point / router. I have DSL through speakeasy with a static IP. Normally I have my Powerbook G4 running OS X 10.3.9 plugged in to the LAN via ethernet. This works fine. However, when I try to go wireless via DHCP, I generally get assigned a public IP instead of a private one (like 192.168.1.xxx). A friend of mine came over with an iBook and he connected without problems. He was running an older version of OS X which didn't allow you to press a button to renew your lease, so I'm not positive it would have stayed that way.
Sometimes when I switch to wireless, my IP looks correct at first and I can at least load google.com or whatever the first page I attempt to load is. But then I can't load anymore. Then when I press "Renew DHCP Lease" I'm back to a public IP again.
I'm definitely within range of the router, and my computer shows that I'm connected to my network with a strong signal.
I also tried resetting my router (by holding the button in the back) and then re-setting it up, but I get the same results afterward; good connection via ethernet, bad via wireless.
I've also tried DHCP with static IP, and just static IP with no success.
Anyone have any ideas what could cause this?