I do agree that some installations there are issues with wireless. I have been using my Rev B with 2.00 and 2.03 FWs have have never seen this condition. However I don't have Fiber or FIOS, just standard Cable modem.
Most issues on wireless deal with configuration and external interferences.
The reason why I mention using the InSSIDer application is to tell if there are other Wifi routers near by. I only have 3 or 4 so I haven't any issues with mine. And thats not to day I won't either. I also have 4 APs running, 2 are running at 2.4Ghz includnig the 655 and 2 running 5Ghz only N.
We've seen some other users on these forums dealing with WiFi congestion, meaning upwards of 10-20 other WiFi routers in a close proximity. Having all these routers near by uses up the channels and each router is having to try to select a channel to use thats seems open or is in used by another router down the road. The auto channel scan is dealing with this and the good neighbor policy built in to these routers. When Auto Scan happens then this is when the disconnections are seen because the single quality on the channel as degraded to a point where auto scan needs to find a new channel. The probable reason of the device not getting re-connected back to the router or the router re-establishing a WiFI connection is that Auto Scan can't find a open or clear channel to lock on to. Thus users have to power off and back on the router to help it out.
One test that you can do to check for this, take this router to a different location, work, friend for families across town, some where different then your area. Hopefully an area that is some what clear of other wifi routers or just a few. See if the problem tracks or not. If it does then ya, there is a probable problem with the router, however it it doesn't, then you'll know.
Updating FW is a good test however in some case dealing with WiFi, might not help at all.
Let us know if updating to v2.03 helps or not. Please follow the FW update process sticky.
And again, need some one to review your settings, lets try teamviewer.com.
I do wish customer support was better.