I have read about wifi connectivity issues with the Ipad2 and I ran into a weird similar problem today.
I was in a business office with an open wifi connection. My ipod touch connected just fine. However, my ipad2 showed it was connected to the network with a strong signal strength but would not connect to the internet or let me retrieve mail. When i compared the IP address and Subnet mask from my ipod touch and ipad2, I saw different settings. I tried all the recommended fixes (e.g., reset network, forget network, reboot, turn off Safari auto-fill, clear cache, cookies, etc.) with no luck.
I went to see the office's general manager and he also had an ipad2. He was connecting to the router just fine with the same settings as my ipod touch, so it is not the router causing the problem. Why is my ipad2 not working but his does work on the same network? Why am I getting different network settings than his ipad2 and my ipod touch?
Any ideas how to fix this? Thanks.