Problem not solved yet, I´m having the same problem as MalkyB, I can access the camera through Infrastructure Mode (wifi hub) but not directly with mi Smartphone, I don't know if its a smartphone problem or what (using a Sony Xperia go with Android Gingerbread).
It´s strange, because if i connect my laptop to the Wifi signal that the camera is emitting, and at the same time I connect my Smartphone to the Camera, There is no problem at all, the Smartphone connects immediately, but as soon as i disconnect the laptop to the camera, the Smarpthone connection goes off, always checking for the IP address.
MalkyB, did you solved the problem?