Randomly slow Airport connection on MacBook C2D

Hi.
Seems I am lucky because my brand new MacBook C2D can connect to WiFi access points!
I have a "surprising issue" though : after a few minutes of connection, the connection gets very very slow.
If I turn Airport off then back on, it all goes back to normal .... for a few minutes
My MacBook is uptodate, with AirPortExtremeUpdate2007001 installed.
I spent over an hour with Applecare Today, but the issue is still there.
We zapped the P-Ram, moved the "SystemConfiguration" folder to the desktop, restarted the router several times with no lasting effect.
The access point is a Netgear DG 834 GT, configured with WPA security and an access list, on an occupied WiFi channel. 3 other Macs (2 MacBook Core Duo, 1 MacBook Pro 17 Core Duo) and one Sony Vaio connect to it without any problem.
The MacBook C2D can connect to my home network (powered by a 802.11g Airport Extreme) at full speed without any issue either.
Should I buy an Ethernet cable, wait for the next Airport update ?
Does anyone experience the same kind of issue ?
Thanks un advance.

I have the exact same problem you are describing. Randomly, I experience EXTREMELY slow connections. Sometimes the connection is so slow it seems I am not connected. I have had this problem since I bought my MacBook C2D in the fall. This problem has occurred at many different access points, including my netgear router, coffee shops, and several different universities.
My husband owns a MacBook Pro, and sometimes we will be side by side on our computers, which supposedly have the same software (I am running 10.4.8 and currently have all the updates as does he), same processor, and he never has trouble with his wireless connection. So it is definitely my computer, not the routers.
I have called Apple support twice to descirbe the problem. They suggested I send the computer in to get the airport card replaced. At this moment my wireless is working. However, this is the first time since yesterday morning that it has worked. I don't think apple will replace the card unless the problem can be reproduced. And the problem seems to be entirely random.
I would be very happy if someone figures out what is wrong.
Thanks.
MacBook Mac OS X (10.4.8)
MacBook Mac OS X (10.4.8)

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null

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

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