Ever since the release of iOS 6, there have been reports of problems with WiFi. At first it was thought to be limited to the iPhone 5, but then there were reports of problems among users of earlier iPhones as well as iPads. According to CNET, the reports of problems have filled up 93 pages on Apple's discussion forums. And while that sounds like a lot, the article acknowledges that there's not yet any indication of how widespread the issue is, and many users aren't having any problem at all. I upgraded my iPad to iOS 6 and haven't had any problem at home. (I have had problems with the campus WiFi, but I think the culprit in that case is more likely the campus network.) The article notes that when an issue affects some people but not others, that makes it a lot harder to pin down. These sorts of glitches seem to be typical early on, and usually get quickly resolved.