I had a problem with wifi in my iPad. I'd get odd pauses on most every click while browsing at (frequent) times, and often those times it would just time out. And yet, the wifi signal showed full or just less than (which is actually more than usual). Sometimes if I stopped the attempt to load the page, waited a few seconds, and then tried again, it would start straight away. Frustrating. My iPhone 3GS? No problems.
However, I tried disconnecting and reconnecting to my wifi network, no luck; rebooting iPad, no luck; rebooting our router, no luck; then resetting all network settings on the iPad (and then entering the wrong router passcode for a few attempts
)... I believe, SUCCESS! Or, at least, when it pauses at the same point, it does so for about a second, and then moves on as normal without further delay. Annoying, but resolution soothes the savage temptation to test the iPad's aerodynamics.
Other than that, very happy with the upgrade (though, as mentioned, I've the iPhone 3GS as well, so I knew what was coming).
Cheers,
Marc