My Iphone Ipod touch 4th gen WiFi problems and solution

Just wanted to let people know the problems that I had with my 4th gen Ipod touch and Iphone 4 WiFi connections (and my solution).
I was having consistent problems with my WiFi connection at home - my devices were connecting fine to the router and apparently the signal was full strength; however, nothing was working properly (internet, itunes, app store). To be specific the devices would work for 5-10 minutes but then the connection would start to falter. My other wireless devices were working fine (HTC Hero, laptops etc.) - just the ipod and iphone seemed to suffer from this signal problem (although the router was always apparently connected).
Obviously, I read countless forums to try and diagnose the problem. There seemed to be a litany of possible causes and I tried the following to resolve the issue:
updated router (Netgear WGR614 v6) firmware rotated wireless encryption (WEP/WAP/nothing)changed router channelreset router powerreset network settings on Apple deviceschanged g and b settings on router
Nothing seemed to work so I began to question the hardware i.e. the router (which I knew was working from my other devices) and the iphone/ipod.
I tested my iphone and ipod on other wireless networks (McDonalds in the UK has free WiFi) and found that, in contrast, they worked fine on other networks. I had read a few posts from people saying that my router was perhaps too old. So as a last resort I bought myself a new router (Netgear WNR2000 v2). I was loathe to do this earlier in case it didnt work, since reasonable spec routers are £50
Anyway it worked ... straight away. I have tested the new connection at home using this SpeedTest app. D/load = 9.01 Mbps, U/load = 0.46 Mbps, Ping 65ms. The router is using the full encryption (WAP2 something ...) and N connection.
As you can probably tell Im no WiFi expert - I just wanted to post this in case people are having similar issues with older routers. I wasnt able to find any definitive advice and solutions from other users so I though Id contribute here, which I guess is the first port of call for new Apple users, like me
I bought the new router 10 days ago and have been enjoying my full speed connection ever since - touch wood. Hope this helps.
iphone 4, ipod touch 4th gen