Q: My wi if connection Hangs at random and the iPad then needs to be restarted for it to reconnect!

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 for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.

Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.

Change the channel on your wireless router (Auto or Channel 6 is best). 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

http://osxdaily.com/2012/03/21/fix-new-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

http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/

Fix iPad Wifi Connection and Signal Issues  http://www.youtube.com/watch?v=uwWtIG5jUxE

Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0

Unable to Connect After iOS Update - saw this solution on another post.

https://discussions.apple.com/thread/4010130

Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.

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If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.

 Cheers, Tom