Internet connection via Airport Extreme/router thats not working, why?

I have been having problems with the internet connection via Airport Extreme which I find it a bit unusual and its still driving me nuts! This is what happened:
I have lost my internet connection last Sunday evening upon my return from a weekend away from home. The last time I have used the internet connection on my macbook was the previous Friday morning. Prior to the apparent disconnection on Sunday, I have always used my internet connection wirelessly through Airport Extreme (that is connected via ethernet cable to the NETGEAR DG834v2 ADSL modem which had worked beautifully until the problem arose on my return). This wireless internet connection allowed me to surf the internet anywhere in my home.
However, upon the successful re-connection to the internet via the modem router, I have discovered several new problems. I have tried to set up the internet connection wirelessly again but instead the following happened:
1. Router (Netgear) drops ADSL connection and cannot reconnect when connected to airport via Ethernet. (which is the case when using airport wireless).
2. Router connects to ADSL fine when computer is connected to it via Ethernet. (However, router disconnects when magsafe power adapter is taken out for some inexplicable reason!)
3. Router connects to ADSL fine when nothing is connected to the router (ie. No Ethernet connections)
4. Router connects to ADSL fine when connected to airport via Ethernet and computer is connected to airport via Ethernet.
So from the above, I cannot connect to the internet properly whether wirelessly or not so I suspect it could be faulty router or could it be airport extreme? I have asked my ISP for an explanation and all they have said is that it cannot be the mis-configuration but could be to do with the power adaptors or the way plugs are set up and suggested I take out all the power plugs (and power surge protector) out to switch everything off, the macbook, router, printer and airport extreme. However, when I have re-plugged them all back in, the problems I have described above still persists!
Would appreciate any help if anyone here recognises why this is the case and what seems to be the cause of this. If so, what should I do? Though I have written back to my ISP again yesterday for more help so im waiting to hear from them...
Thanks
u2dougal

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Message was edited by: leino88
Message was edited by: leino88

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http://discussions.apple.com/message.jspa?messageID=10109788#10109788
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raxx wrote:
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Slow wireless internet connection using airport extreme

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BK37, I hope you've solved your problem by now. But if not, and for the benefit of others reading this post, let me share what I (finally) discovered when I had virtually the same problem, i.e. 8mbps wired speed, <50kbps wireless speed.
I tried literally <span style="font-style:italic;">every suggestion I could find in the Airport discussions. First, I can assure you that changing the channel can give you incremental speed improvements in some instances, but for radical drops like yours, it's not the answer. Nor is turning off ipv6, or changing to WEP, or turning off Remote Access, or moving the AEBS, or or or or or....
With such a radical drop in speed, it's most likely you have a hardware-related blockage somewhere. In my case it was my wiring configuration. My setup was France Telecom Livebox (ADSL modem / ethernet & 802.11g router) --> Ethernet cable --> Linksys RTP 3100 IP phone adapter / router --> Ethernet cable --> AEBS --> 3 Airport Express set up to extend network and run AirTunes. After eliminating every other possible problem, I narrowed it down to the Linksys router, which for reasons I have yet to figure out was trapping the speed to the AEBS. I ethernet cabled both the Linksys router and the AEBS directly to the Livebox and presto! Back to blazing speed.
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Internet connection via Airport Extreme/router thats not working, why?

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