Airport Extreme Intermittent Network Interruption when Downloading Large Amounts of Data.

I've had an Airport Extreme Base Station for about 2.5 years and have had no problems until the last 6 months. I have my iMac and a PC directly connected through ethernet and another PC connected wirelessly. I occasionally need to download very large data files that max out my download connection speed at about 2.5Mbs. During these downloads, my entire network loses connection to the internet intermittently for between 2 and 8 seconds with a separation between connection losses at around 20-30 seconds each. This includes the hard wired machines. I've tested a download with a direct connection to my cable modem without incident. The base station is causing the problem. I've attempted to reset the Base Station with good results after reset, but then the problem simply returns after a while. I've updated the firmware to latest version with no change.
Can anyone help me with the cause of the connection loss and a method of preventing it? THIS IS NOT A WIRELESS PROBLEM. I believe it has to do with the massive amount of data being handled. Any help would be appreciated.

Ok, did some more sniffing around and found this thread.
https://discussions.apple.com/thread/2508959?start=0&tstart=0
It seems that the AEBS has had a serious flaw for the last 6 years that Apple has been unable to address adequately. Here is a portion of the log file. It simply repeats the same log entries over and over.
Mar 07 21:25:17
Severity:5
Associated with station 58:55:ca:c7:c2:ae
Mar 07 21:25:17
Severity:5
Installed unicast CCMP key for supplicant 58:55:ca:c7:c2:ae
Mar 07 21:26:17
Severity:5
Disassociated with station 58:55:ca:c7:c2:ae
Mar 07 21:26:17
Severity:5
Rotated CCMP group key.
Mar 07 21:30:43
Severity:5
Rotated CCMP group key.
Mar 07 21:36:41
Severity:5
Clock synchronized to network time server time.apple.com (adjusted +0 seconds).
Mar 07 21:55:08
Severity:5
Associated with station 58:55:ca:c7:c2:ae
Mar 07 21:55:08
Severity:5
Installed unicast CCMP key for supplicant 58:55:ca:c7:c2:ae
Mar 07 21:55:32
Severity:5
Disassociated with station 58:55:ca:c7:c2:ae
Mar 07 21:55:33
Severity:5
Rotated CCMP group key.
Mar 07 21:59:47
Severity:5
Rotated CCMP group key.
Mar 07 22:24:53
Severity:5
Associated with station 58:55:ca:c7:c2:ae
Mar 07 22:24:53
Severity:5
Installed unicast CCMP key for supplicant 58:55:ca:c7:c2:ae
Mar 07 22:25:18
Severity:5
Disassociated with station 58:55:ca:c7:c2:ae
Mar 07 22:25:18
Severity:5
Rotated CCMP group key.
Mar 07 22:30:43
Severity:5
Rotated CCMP group key.
Mar 07 22:36:42
Severity:5
Clock synchronized to network time server time.apple.com (adjusted -1 seconds).
Mar 07 22:54:37
Severity:5
Associated with station 58:55:ca:c7:c2:ae
Mar 07 22:54:37
Severity:5
Installed unicast CCMP key for supplicant 58:55:ca:c7:c2:ae
Anyone have any ideas why this is happening?

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Airport Extreme Intermittent Network Interruption when Downloading Large Amounts of Data.

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