Wireless router problems

I’m really just filing this here for future reference. I’ve been experiencing major problems with my net connections more - lord, lord - more than a month now. Here’s my checklist for attempting to sort the problem out:
- Check with ISP that the net connection is sound
- Move the router from close to a shared wall
- Reboot using the reset button in the back of the unit (15 secs at least)
- Connect via ethernet cable to the router and checking settings in the Netgear control panel
- Change the wireless channel in the control panel
- Upgrade and downgrade the router firmware (available via the NetGear website)
- We have a USB modem and are able to connect successfuly using that with the same leads as the NetGear (though - deeply irritatingly - connection to this modem causes sudden, random kernel panics)
- We have two laptops - both of them are experiencing the same fluctuations and complete dropouts in wireless receptivity. Even when reception is good, the router is unable to connect to the internet.
I’ve narrowed it down to two possibilites now:
- Router failure
- Interference from a neighbour’s network (visible in the airport menu) - can’t check with him as he’s away for long periods
I’ll finally ascertain which one of these it is when I manage to borrow a friend’s router and see whether that works or not. Of course the router is outside its guarantee period…
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