My wife has a macbook and has had no problem connecting to the internet through our router until now. Our wireless network has always been password protected, but until this weekend she never had to re-enter the password. now she has to re-enter it every time she starts surfing the net. The only change was that she had used a wireless account at her parents house. She has used other wireless accounts (wifi hotspots etc) before and never had this issue. Any thoughts on what the problem might be? The router is a d-link di-624.

This happened a couple of times to my sisters computer. What I did was deleted all the wireless networks that my computer saved (including the one you want to connect to now) and then connected to the wireless network again and then it resolved the issue she was having.