My condominium provides a 100Mbs Internet LAN and ever since I got an iPhone 3 a couple of years ago I've had a two-channel WiFi unit plugged into it. When I changed over to the iPhone 4 I noticed increased interruptions in connections. These show up as repeated requests for passwords and "could not connect" error messages. I found out that moving closer to the WiFi unit sometimes restored the connections, but occasionally i would have to press the reset button or temporarily switch the unit off and then back on again. Then my wife got an iPhone 4, and I got an iPad 2. Now the interruptions are so frequent that it's getting really tiresome. On the other hand my laptop, which runs on the same WiFi system, has no such problems, so it seems to be an Apple thing. I was hoping that iOS 5 might cure things, but now the problems occur at least once a day on one or more of our devices. If anything, this is worse than before. I've checked for other WiFi signals but only one or two show up, and at very low signal strengths, so it's unlikely to be WiFi interference. Bluetooth is OFF and our microwave is never ON when these service interruptions occur. Any comments or advice? I noticed yesterday that the latest WiFi units offer higher maximum throughput rates and are cheaper than the unit I bought two or three years ago, and promise a greater operational range. But the box label did not claim compatibility with iPad 2, and the Apple salesperson was unable to confirm it, and recommended me not to buy one without confirmation. I would be grateful for suggestions. The iPhones can both--at a pinch--manage with our 3G service, but the iPad is WiFi only. The flaky WiFi connection was a real pain when updating to iOS 5!