Intermittent Connection Drop since the 7.3.2 update.

Setup:

AirPort Extreme 802.11n (802.11n only (5GHz))

iMac "Core 2 Duo" 3.06 24-Inch (08)
iMac "Core 2 Extreme" 2.8 24-Inch (Al)
MacBook Pro "Core 2 Duo" 2.2 15" (SR)

Everything was running smoothly when we first got the AirPort Extreme. Then the 7.3.2 update came out and we started having intermittent connection issues.

Every few minutes, there would be no Internet connection whatsoever even though the AirPort connection is still there and I can still connect to the AirPort Extreme via AirPort Utility. Obviously I first assumed it was my ISP so I called but they assured it wasn't them. Just to verify, I had plugged one of my computers into the modem directly bypassing the AirPort and it was indeed fine.

Below are some of the other possible solutions I've tried and failed:
• Revert back to previous versions of firmware. (I've tried them all)
• Reset the AirPort Extreme

Any suggestions or even just confirmation that I'm not the only one experiencing this issue would be great 🙂