iwlagn driver continually drops connection

[Michael Peck]

Lenovo ThinkPad Edge E520 running Linux Mint 12: Wifi driver drops the connection every few minutes to a new-ish Verizon FiOS Actiontec access point with 'Stopping AGG while state not ON or starting'. Works perfectly against an older Actiontec. dmesg output is below.

[ 1602.975423] iwlagn 0000:08:00.0: Stopping AGG while state not ON or starting
[ 1603.082093] cfg80211: All devices are disconnected, going to restore regulatory settings
[ 1603.082108] cfg80211: Restoring regulatory settings
[ 1603.082118] cfg80211: Calling CRDA to update world regulatory domain
[ 1603.089196] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain
[ 1603.089207] cfg80211: World regulatory domain updated:
[ 1603.089211] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 1603.089218] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1603.089224] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1603.089229] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1603.089234] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1603.089239] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

This is an embarrassing problem for personal reasons, please advise.