Internet problems.

I've been experiencing these weird Wi-Fi/3g problems lately. Most of my apps tend to say that I have no internet connection on, even tho there is WiFi on all the time. Games and apps that tens to say this are things like, Tap Tap Revenge 3, CrazyRemote, Shadow Cities (Connection to the server failed), and every Radio app i tried. I need your help ASAP.

 

Okay, now everything says it, including Safari. HELP!

Somebody tell me... Why... Can't i connect to my modem anymore... It has WLAN on, but no. Everytime i try to join it with my iPhone, it tells me, can't connect.