I have a wireless router by D-Link and it is sitting less than 25 feet from my laptop. For some reason, at random times, it cannot be seen by the laptop's hardware/software. Does anyone know what can be causing this? A friend suggested that maybe a neighbour is using a cordless phone that uses the same frequency and that is causing trouble. I live in a condo so there are many people relatively close. Anyone know if this makes sense or has any other ideas?