Network Problem; Internet Connect says full signal but no connection

I've been having this problem with my Mac ever since moving into a new house a while back.

The house has a wireless network and I've successfuly connected my Mac to it so when I open the Internet Connect utility, the network appears and tells me I have a full signal. Problem is my browser wont load any pages. I tried the network diagnostic and restarted my modem and router already. That didn't work.

This has been going on for sometime now. When I first moved in I had this problem and was so busy that I just used an old PC I had for a while. Then one day I just started my Mac up and all of a sudden I was connected to the network. Its been working fine until today when I was trying to load a couple of old hardrives to do some backups. All of a sudden my network no longer works again! And again, Internet Connect tells me I'm getting a full signal so access to the network or interference doesn't seem to be the problem.

Here are my Mac's specs:

Power Mac G4 2.1
Dual CPU 867MHz
Airport Firmware v.9.52
Wireless Channel 6

Would really appreciate any help ... ???

Airport is on but don't connect to the internet

I have a similar problem - although not as bad as yours - when I'm at work I can sometimes get connected to the internet, but more often than not I can't. It always tells me that I'm fully connected via the Airport.
At home however, I always get connected no problems.
Did you ever sort this one out?

If you hard wire your mac will it work correctly?

I have the same problem as shotdsherrif. And when I connect an ethernet cord from the modem/router combo directly to my mac, my internet works. All help is greatly appreciated.

Tom

Have you tried changing the wireless channel to see if that helps?

i got mine working again. All I did was go to the CONFIGURE screen for my AIRPORT and deleted all the wireless networks on the list, including my own. Then I added it again, turned off the AIRPORT, waited a minute, then turned the AIRPORT back on and it's been working ever since.