i've been using wifi on my galaxy ace normaly but one day something happened (who knows what) and it disconnected by itself i was trying to connect again but nothing, it says disconnected right away.. i tried "foerget this network" but still not connecting. the weird thing is that when i go to someone else's place that there is wifi my mobile connects just fine, this only happens in my house and i dont get why since i've been using it for months and i havent changed password or anything.