Airport network connection lost...but I got it back. What's going on?

I'm connected via AirPort. We use an original Base Station (the 802.11b kind) even though my card is *.g enabled. This works fine.
I have all recent updates applied, including J2SE 5.0 Release 3 and AirPort Update 2005-001.
I lost the connection earlier today. When I tried to get it back, I got "Looking for PPPoE host". After using Network Utility, Network in System Preferences, and Network Diagnostics, I gave up. (I knew it wasn't a problem with the base station because other computers got to the network and Internet fine.)
On a hunch, I thought my preferences may have become corrupted (I found this to be the case after installing 10.4.2) and so I deleted com.apple.NetworkConfig.plist. I then used Network Setup Assistant, which got the network back fine (I've been connected for 5h 45m as I type this, though three hours of it I couldn't find the base station.)
Everything's normal now...but I still want to know what happened.

Turns out the network gets flaky at times. And the HP Toolbox software with my laserjet 1320 caused loss of connection. I got it back by removing the software...

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Hi there,
having oracle 8.1.7.4 64 bit on Aix 4.3.3 replicating on a twin machine.
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My database was replicating from about two months without problems. Then we activate it for test and now i rebuilt it but now having problems i mentioned above.
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"network connection lost" while installing Ovi Sto...

I'm getting a "Network connection lost" error shortly after the installation of a downloaded app is started. The status bar gets to about 15% and then the installation is interrupted.
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I've noticed other threads on this forum about a somewhat similar issue but no real solution appears in any of them.
My N8-00 was upgraded to the Belle OS over the weekend and it caused most of the apps to be uninstalled. Now I'm trying to get them back but fail to do so because of the error.
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Performing hard reset will set the phone to its default setting. You may have to check the settings of your phone again. To define the your access points, go to settings> connectivity> settings> network destinations> Internet> options> new access point> Automatically check for available access point> yes. You can choose GPRS connection first and then run the same steps and then set up your WLAN.
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If you think this post is helpful, please click the white star below.

Hi there can anyone help. I am connected to the internet by ethernet but my connection keeps timing out and my network diagnostics shows all green and network connection ok but still no internet connection. the other wireless laptop in my flat works well.

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My network connected for a few hours then went back to timing out. I have not changed anything. However there four additional laptop users in my family who do not seem to be having any problems using their wireless connection. Could their film and music downloads be causing the timing out of my connection and if so is there a way I could prioritizes my computer or limit their use?

I have had two movie rentals, stop in the middle of downloading tonight, both giving me the error message "(err = 50)" -- It looks like its a network connectivity message, but I'm connected. Any idea on what could be causing this? No info anywhere!

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If you have anti virus software installed, disable that.
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I can not upgrade the Muse. Says that the connection failed, but she's perfect. What to do to upgrade my Muse? Thank you!

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I have apple TV this is second time My money goes down to drain not even load a movie To night I was watching movie but stop never come back .what could be the reason?

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I had the exact same thing happen ... for the second time. I'm done renting movies on Apple TV that I cannot watch, and don't get my money back. I have a strong Internet connection, and about 10 minutes into a movie and it stops and says that the movie will be ready to view in 55 hours. Rediculous ... and frustrating. I don't know how to fix this, and I disagee with the other person responding to you who said it was your network. I have a strong network, running through an Airport Extreme -- and this problem persists. I'm done.

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Airport network connected on full bars but "no internet connection" and missing lock icon!

this is really frustrating!
I'm using wireless in my house. when i click on my network it connects and it shows perfect connection which is full bars.
on Network Preferences it says that i'm connected to the Airport but when i go to Safari it shows "You are not connected to the Internet" so i click on Network Diagnostic where the 3 network status on top has the green indicator but the ISP, Internet and Server show red and failed.
I don't think there's anything wrong with my internet connection since I'm able to go online using my sister's computer and also on my iPhone.
There's also usually a Lock icon/symbol next to my network's name but when i'm connected to my network the Lock icon seems to be missing but it still shows full bars connection. I really don't get how it's possible to be connected to a network, but no internet connection, while i can access the internet on other devices.
Please help me out here. I've tried ways like going to library>preferences then put the system configuration into Trash, and going to Network Preferences and removing the Airport service and creating a new one.
and one more thing. all mentioned above are when i clicked on Advanced on network preferences then i clicked on TCP/IP and changed the Configure IPv4 from Using DHCP to Manually. When i'm back to using DHCP there's an exclamation point over the airport icon on the top bar and it says no internet connection.

Got my own question answered by a colleague.
He had me create another "Location" in the network pane of System Preferences, then choose it and click Apply. I created a new location which I called 'Airport', chose it and clicked Apply and sure enough, an IP address showed up and all is well.
Justin said it's a network bug in Leopard.

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In my case the DNS address is greyed out so I cannot select it. What worked for me - occasionally - is changing the Network location to 'Automatic'. I had it set on a custom setting. Unfortunately this is sporadic. It will start to display content then just stops. I can jump-start it by fiddling with location but not always. The Airport range seems to be reduced too but I think that is just the flakiness of the connection.

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Hi simonnathan76,
If you are having issues checking for updates in iTunes (and the issue is only occuring in your user), you may find the troubleshooting steps outlined in the following article helpful:
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Airport Express connects wirelessly but Macbook doesn't??

Hello, hope someone can help with this, here’s our set-up:
UK BT broadband – Belkin Router – Belkin Powerline Adapter – Airport Extreme
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How is it possible that the Airport Express can connect wirelessly but the Macbook in the same room can not, do they have very different wifi adapters?

Hi there,
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http://support.apple.com/kb/ht4628
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Sharing airport network connection to an airport base station over ethernet

Hi there,
I've got a network connection to the internet via Airport, on my iBook G4 with OS X 10.4.9.
This iBook is connected to the LAN port on an Airport Express base station (for physical wiring reasons, it cannot be connected to the WAN port).
This Airport Express has a dozen other computers attached to it.
Does anyone know how I might be able to share my internet connection, via the LAN side of the Airport Express, to all these other computers?
Incidentally, when I turn on both the Ethernet LAN connection and the Airport internet connection, I stop being able to communicate over the internet connection. When I disable the LAN, the internet connection returns.
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Brian

It turns out that in
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Airport network connection lost...but I got it back. What's going on?

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