I got my tab last monday, and i connected to the wi-fi, and it was working fine. Last night, suddenly i got no connection at all, and i tried to connect again, but it says no "IP available"... my internet is working fine, i just can't connect the tablet, i have a laptop that is working fine, and a nother tablet that is working as well... just the acer that is not working (i don't connect those all at the same time). Please help me... i'm not very good at this gadget thing! Ona last thing, it says that the wi-fi is protected or something like that...