I am encounter this problem, my samsung galaxy 5503 cannot connect wifi at my house but it is working fine at starbuck, KFC. It is ok for my laptop to connect my wifi at home, so shouldn't be any problem on my hand phone. Before I sent for upgrade to Android version 2.2, was ok but after upgraded to 2.2, I am having this problem. Samsung technician said the setting is ok, they are able to connect wifi at their office. Any help?