Hi, glad to be a member of this forum. I would like to bring to the attention of the android developers that their upgrade V3.1 has a bug. Last Saturday, I downloaded an offer of upgrade to V3.1. The next thing I realized, I can not connect to my home wifi router. I tested bringing my Tab to other wifi spots and I can not connect to all of them. I got information from the web that this is cause by the V3.1 and a simple factory reset will correct the bug. I will not do this simple suggestion because I bought so many apps already. Resetting the tab will erase all the downloaded apps. I repeat, I BOUGHT many, not free, apps already. Anyone got any idea about this recent issue? Please help. Android developers please review your software. May I suggest that you find & correct the fault and release a patch for this in the web.