I live in a small town which has one primary ISP. Lately I have noticed that a number of wireless routers have been locking up and requiring a reboot before allowing any connections. This has affected two of my routers, my work router, and a few others. In all cases wired continued to function as usual. Often wireless clients can see the SSID but simply won't connect. I can only think of a few possibilities and was hoping someone here might be able to point me in the right direction:

1. Our ISP is well known to be flaky, something they are doing is causing this, what that might be I have no clue it as seems to affect the wireless only.

2. There's a power issue in town, given our remote location and reputation for crap electrical, this seems reasonable. Only one router was plugged in to a UPS, and I'm not sure of the quality.

3. There is some bug in all the different firmware for every one of these routers (all different). That doesn't seem reasonable, unless;

4. it's an unknown (or known) exploit or DoS of some sort being launched by a massive team of ninjas hell bent on forcing us all to be tethered to our walls by ethernet cables or;

5. it's just been a coincidence and I'm just paranoid (this has some weight, I mean read 4 again).

Anyone else experience similar issues and have some tips?