There's a great low-cost (sort of) spectrum analyzer called "Wi-Spy" (no affiliation) for anyone who wants to track down what's ruining the 2.4GHz spectrum. Wit

There's a great low-cost (sort of) spectrum analyzer called "Wi-Spy" (no affiliation) for anyone who wants to track down what's ruining the 2.4GHz spectrum. With that and WireShark running on a Linux machine with monitor-mode capable Wi-Fi interface you can pinpoint what your Wi-Fi problem is quite well.