My iPad 2 keeps dropping my home wifi connection, usually after 5-10 minutes. For example, when surfing with Safari, all of a sudden the connection hangs up and web sites don't respond. I have not had any problems with other devices on my network. When the iPad drops connection, other devices on the network also lose their connection. The only way I've found to restore the connection is to power cycle the router, after which the iPad will again drop after 10 minutes. Web browsers say "no DNS server found," presumably referring to the router connection. There have been no issues before the iPad. Has anyone else encountered this issue? I have updated firmware on my router and 4.3.3 iOS.