Just posted to the other thread. Neil, did you read through that Apple thread? Seems as though the new iOS 4.x has caused all kinds of battery problems.
I can't begin to list all the potential suggestions from that thread including reverting to iOS 3, backing up then resetting to new iPod and restoring from the backup, turning off all app connections (or removing them) that call on the Game Center or push notification, manually turning off the WiFi, not putting the iPod to sleep but actually turning it off, using Airplane mode, etc.
You really need to read through the last 10 pages to glean some of the things that have helped others. The Apple people have not let info on how to downgrade be posted. I went to Google and only typed "downgrade" and immediately the suggestions were for downgrading the iOS so it's a popular item.
http://www.google.com/webhp?hl=en#sclient=...304850557947867Of course, if you don't have any recurring difficulties, then you won't need to do anything. Or maybe some of the user suggestions will help.
In any rate, I'm not going to upgrade my iPod Touch!
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OK, Pauline posted while I was typing.
That page has a summary of some of the suggestions but there are more in the thread.