No internet over wifi, bizarre problem

Summary:
I cannot access the internet via wifi, but can with a wired connection. There is one other computer on the network, connected via wifi. It has access to the internet. I can file share and VNC to this other computer either wired or wireless.
So everything works exactly as I'd expect, except when I type in "www.apple.com" or whatever, the browser hangs and eventually says the server couldn't be found. Nothing outside of the network resolves, when I'm connected via wifi, except the machine on the local network (and the router/AP itself).
I've rebooted my machine, and in safe boot, and I've rebooted the router. So I'm totally at a loss how this is even possible. Nothing has changed with the laptop or the router, or the network, in 3-4 days.

Searched for "network reset" and found suggestions to delete the folder:
/Library/Preferences/SystemConfiguration
I did this, restarted and now I have internet via wifi again. I don't understand why or how it stopped working in the first place let alone how this fixed it or even if it did.

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Well it might still be the Mavericks Wifi issue... slow throughput on an apparently strong signal is part of its behavior from what I've read. So to recap You got a signal (fairly Strong) appeared to be connected but Safari could not display the welcome page.
I'll share something I do in a case like that. I use Firefox. I keep a copy of Firefox, Opera and Chrome on my laptop because some sites use non-standard web code and the different browsers "play" better with the server/router. Safari is a lot better than it was when it first stared out but there are some sites put together (especially financial sites) that just won't let Safari play (they can code to prevent that).
If you have time between flights download Firefox and give it a shot... at this you have nothing to lose.
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@strech1
One of the probable causes of your concern is a corrupted firmware in your router. Doe your router have an EA Series Linksys Smart Wi-Fi Firmware or a Classic EA Series Cisco Connect Firmware? It would be best that your router have the latest EA Series Linksys Smart Wi-Fi Firmware installed. It would be best to update the drivers of the wireless adapter installed on your wireless computer.

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Follow the steps here. If nothing works, make an appointment at an Apple store or with whoever handles iPhone warranty where you live:
http://support.apple.com/kb/TS1398

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@strech1
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PS I've cleared the cache apart from saved passwords and done a soft reset . It's running on v5 software .

If the phone will connect to another wi-fi then its not the phone .
You could try a reset .
1. *#7780# - Restore factory settings - resets all the settings to the default ( you will not lose any data)
2. *#7370# - Reformat your phone
Lose all data so back up first
default reset code 12345
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You might have more luck in the forum devoted to such issues:
http://discussions.apple.com/forum.jspa?forumID=755
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Ok, thank you.
I know you already tried a number of resets, but please give the following a try to verify that you can get basic Internet access via a wireless connection to the Express from any of your wireless network clients.
I would recommend that you do the following as a minimum:
Power-down the modem, AirPort base station, and computer(s).
Power-up the modem; wait at least 10-15 minutes to allow it adequate time to initialize.
Power-up the AirPort base station; wait at least 5-10 minutes. Note: The AirPort's status light may continue to flash amber after it has intialized. That is because, there may be some additional configuration items necessary, like setting up wireless security, before the overall setup is completed to get a green status.
Power-up your computer(s).
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Disconnect the AirPort base station from the Internet broadband modem.
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After the base station resets, go ahead and power it back down.
Reconnect the AirPort base station to the Internet broadband modem. For the Extreme and Time Capsule, be sure to connect the cable to the base station's WAN (circle-of-dots) port.
Continue with step 2 in the first set of steps.
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I don't know if this will help anyone else, but I came across some changes (purely by experimentation) that may help. I hope so, at least...
I opened the Airport Utility and I swapped channels. The default is channel 6, but every other WiFi router defaults to this channel, too. I changed my Airport Extreme to use channel 3 (as well as my Airport Express), and now things are back to what I would have expected for an 802.11g connection.
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Best wishes and good luck!
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My iPhone has stopped working over wifi. It was working till late night yesterday and in monring it stopped. I thought that it may be problem in my internet. But noticed that it doesn't work with office wifi as well. Have done some of the reset option.

My iPhone has stopped working over wifi. It was working till late night yesterday and in monring it stopped. I thought that it may be problem in my internet. But noticed that it doesn't work with office wifi as well. Have done some of the reset option.

Follow the steps here. If nothing works, make an appointment at an Apple store or with whoever handles iPhone warranty where you live:
http://support.apple.com/kb/TS1398

Unable to receive internet connection over wifi connection. Shows that I am connected to the network, but do not have internet access. Checked my firewall and turned it off. What else am I missing or should be doing differently?

Unable to receive internet connection over wifi connection. Shows that I am connected to the network, but do not have internet access. Checked my firewall and turned it off. What else am I missing or should be doing differently?

You might want to try resetting your router and your modem - just unplug the cords, leave them unplugged for about 3-5 minutes and then replug the modem and then the router in that order.
This may or may not correct your problem - call back if it doesn't.
Clinton

I am transmitting data over internet and WiFi ,it's working fine with internet but when I choose WiFi for data transmission data is not being transmitted. What may be the possible issues of data transmission failure over WiFi? Please help me.

I am transmitting data over internet and WiFi ,it's working fine with Internet but when I choose WiFi for data transmission data is not being transmitted. What may be the possible issues of data transmission failure over WiFi? Please help me....
Thanks in Advance.
Neeraj@iDev

After a week's worth of debugging, I found the issue.
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I'm not sure why ArrayList isn't a valid return type, I've been looking at the Adobe docs, and still can't see why this isn't valid. And, why it works in Debug mode and not in Release build is even stranger. Maybe someone can shed some light on the logic here to me.

Wifi Internet Sharing over wifi!

Hi every body.
i want to share my network connection (i use wifi) on wifi!
in windows you can use "virtual network router" and you can share you network (even you use to a proxy) and this software create a wifi hotspot and other clinets cant connet to that and use your wifi connection.
in mac, in Sharing, you can share your internet connection on other ports! if use wifi you can share your intenet on Ethernet or... but not WiFi!
my question is how to create an hotspot and share my internet over a wifi when i use wifi to connect to intenet too!
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It doesn't work like that and can't be used like that. You need a stand alone WiFi signal extender box.
Also I have never seen any Windows PC able to do that unless it has 2 WiFi cards in it. One WiFi card to receive the signal from the main router, communicate with the main router, and the other to broadcast that connection out to other WiFi devices.

No internet over wifi, bizarre problem

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