Currently Being ModeratedMay 11, 2012 5:27 PM (in response to bwh56)
The same exact issue has just now cropped up for us. We have NEVER had a problem with connectivity until just a few minutes ago. Our connection to wifi is very good, there is just no connection to the internet. My iMac is on the same network and is connecting to the net with no trouble.
Currently Being ModeratedMay 11, 2012 5:32 PM (in response to jodyr)
Actually just got ours working again. I followed the advice of JimHdk in the following link: https://discussions.apple.com/thread/3869371?start=0&tstart=0
Hopefully it helps you out too!
Edit: something I forgot to mention was to check the ip address that your wireless network is giving your iPad. If it is blank or begins with 169then apparntly your router has given it a faulty IP address which would indicate while it says you have full signal strength yet no internt connection.
Currently Being ModeratedMay 11, 2012 5:43 PM (in response to bwh56)
I use my iMac as the router. I loaded 10.7.4 and new Safari this morning, so I think there may be a bug that's causing the problem. I can get the iPad online for a few seconds, then it drops off. The wireless signal is strong, the internet connect is crap to non-existent.
Currently Being ModeratedMay 11, 2012 5:45 PM (in response to bwh56)
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Change the channel on your wireless router. Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Currently Being ModeratedMay 11, 2012 6:43 PM (in response to jodyr)
I'm sorry, I wouldnt really no what else to do beyond that. Hopefully some of the Apple gurus on here can help you out.
Currently Being ModeratedMay 11, 2012 6:48 PM (in response to bwh56)
1. Have you tried rebooting router?
2. Reset network settings
3. Have you tried changing the security settings e.g. WEP, WPA, WPA2
4. Have you tried changing channel; try channel 1, 6 or 11 (non-overlapping channels)?
5. Reduce the number of walls between your iPad and the router.
6. Have you tried changing wireless protocol e.g. a/b/g/n
Currently Being ModeratedMay 11, 2012 7:20 PM (in response to Diavonex)
It's not the wifi, it's the fact that internet sharing over wifi is broken in 10.7.4. There is a known issue. Thanks for the advice.