Freeze during large FW transfer from WD

Just got my second MBP and having issues with freezing while doing FW transfer. System would lock up after about 20 - 30 minutes of transfer. Saw this with Finder, iTune, and Time machine. Never happened with my other MBP which is 13" unibody. So, I know my WD is fine. Both running latest version of Snow Leopard. Really annoying to see this after spending so much money on it. Has anyone seen this problem before? I have read some issues surrounding FW, but they don't seem to relate to what I am experiencing.
Many thanks in advance.

No. I don't have another FW ext HD. I am starting to hear lot of WD issue and planning to buy some Lacie. Odd thing is I never had the problem with my 13". Concern I have is that the laptop gets really hot by the left side (assuming where HD and FW board is). Read some stuff about graphicboards getting overheated and could freeze up the machine. Also, found very very long forum trail about the freeze up of new i5 and i7 MBPs. fortunately, i haven't experience any other issue beside the FW lock up. So, i am still happy with the purchase, but still worried...

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I don't have any N cards yet, but I upgraded to this router because my home internet service is faster than what my older WRT-54g could route. This new router does route and I can now achieve the rated speeds of my ISP (50/10 mbps).
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It doesn't even have to be a large file over wifi to transfer. Just now as I'm typing this post I noticed the constant ping on my other monitor started timing out. I power cycled the router in time for me to submit this post. In fact I had to do it three times in the time it took me to write this post. This is the most frustrating experience I've had with any wifi ap/router, and I play with Cisco gear at work that run real IOS.
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Reset factory defaults by holding in the rear reset button for over 30 seconds.
I can confirm this resets the defaults as the password and all other settings are back to default.
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I tried it with just the default settings. Router still freezes.
I've reset the router numerous times. Still freezes.
Power cycle it for more than a minute. Still freezes.
Reflash it with Linksys's latest firmware. Still freezes.
What do I do next? I have a feeling it's the same problem as in a lot of the HP Printer firmware boards. That problem is poor solder joints on the BGA processor connection. To fix that you put the formatter board in an oven at 400 degrees for 5 to 8 minutes. After that time you just let it cool to room temperature. The oven heats the poor solder joints enough so that it reseats and gets a better connection. There are hundreds of posts of success on this. I also hear that the solder connection problem exists for many of the older revision Xbox 360 game consoles causing the infamous "Red Ring of Death".
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Solved!
Go to Solution.

Ok I've had my replacement 320N for almost 1 full week now, and while at first it was fine, come Sunday it appears to freeze during heavy transfers. I was streaming an HD movie to the laptop connected to the TV. 3/4ths of the way through the movie it started skipping. What do you know, the whole network was down. No internet or anything. Power cycle the router and everything was back up. Needless to say, I finished the movie through the wired connection. The next day I tried copying 8GB of data wirelessly. The SSID vanished 1/3rd of the way in during the transfer.
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Freeze during large FW transfer from WD

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