The (big) list of iPad WiFi Dropping Solutions

Question

Here's a list I've compiled of multiple solutions on how to fix the iPad's dropping WiFi. If your iPad can't access the internet at all then this is not the list for you. If your iPad shows incorrect password when it is in fact the right password then some solutions here may work for you.
1. Move closer to your router
2. Turn WiFi off then on again.
3. Restart you router.
4. Update your router
5. Update your iPad.
6. Renew your lease by tapping Settings > WiFi, pressing the arrow next to your network name (SSID) and clicking Renew Lease.
7. Reset your Network Settings by going to Settings > General > Reset > Reset Network Setting. You will need to rejoin to your network once completed.
8. If you know your IP addresses, DNS address, Router address and Subnet mask then go to Settings > WiFi then click the arrow on your network, click 'Static' and manually enter your addresses. Do not worry about the Search Domains.
9. If no. 6 does not work then try changing the DNS address to an OpenDNS address (208.67.220.220 and 208.67.222.222)
10. Oddly, lowering your brightness setting may work (making it higher may also work). Also turning off auto-brightness may work.
11. Set your channel (on your router) to 11. It this does not work then try Auto.
12. Set the HTTP Proxy to 'Auto' (Settings > WiFi > (select your name) > Select Auto). If this solution does not work then set it back to Off.
13. Switch your Security setting (on your router) to WPA2 or Mixed WPA & WPA2. (This solution worked for me!)
14. If you see something like a "Key Timer", "Group Key Timer", "Group Update Time Value" or "Group Key Update Timer" in your router security settings then set it to 0. If you see something like "ARP" then set that to 0.
15. Try everything at http://support.apple.com/kb/HT4199
16. Try resetting your router (WARNING: You will have to reconfigure your router afterwards as it'll lose all its settings).
17. If all else fails, buy a new router (try an Apple AirPort Extreme/Express).
Another thing you could try is putting your iPad into a DMZ but I think that is not required.
This list will grow from time to time. If I've missed anything then please give me a heads up!
Message was edited by: Bo98 (added another solution (see no. 7))
Message was edited by: Bo98 (added solution - see no. 12)
Message was edited by: Bo98 - Updated No. 9 and 13 added No. 14 and 5
Message was edited by: Bo98 (added yet another solution - No. 1)

Answer 1

Buying a new router (item 17) worked for me. I finally bit the bullet and got me a half decent router I could afford. Netgear WNR3500 (?) ... I have set it to WPA2-PSK[AES] and everything else as default and my iPad seems to be happy with it.
I wouldn't recommend getting an airport extreme. apparently there is no web interface. Maybe you can control it and configure it through iTunes. Or maybe you just have to live with the ultimate wisdom of some code jockey at apple. Who knows.
I wasn't willing to take that chance after the infuriating experience with iPad.
For now, my iPad seems to like the new router (an un-expected purchase that I was forced to make). Will report back if there are problems with it.
Message was edited by: a.e.a.m : added encryption details.