I've had 2.4 go down once since I installed it. Laptop was still connected and it showed full strength signal, but had no internet access. I was blaming the laptop, since I have has issues in the past with having to reset the wifi on it. Then when I switched the phone and Kindle from 5-2.4 they lost internet access as well. Yes a power cycle of the A+ reset everything and everybody was happy again. It only happened once, so I wasn't too concerned at the time.